Ar9 direct blowback 380 pistols or . Radian raptor CH. However, many people think 'Banshee' = CMMG RDB and it doesn't. What keeps the system safe and functioning is the weight of the BCG and the spring holding it closed. Jul 10, 2023 · In this video, Hop tests the new Maxim Defense radial-delayed buffer system for the AR9 platform. Some patents going back to 1856 use direct blowback methods to make loading cannons easier. 5oz buffer on hand. Being kinda sorta like an oversized 10/22 it shares some features, like reliability, simplicity, and a good price, but some that aren't so great like a crossbolt safety, and stupid mag release. 5" barrel on the way, and already have a spare H2 4. Is it just the anti-walk pins that make PCC triggers more durable against direct blowback? Or are there other factors that make them stronger than a regular mil-spec? In short: Could I use an AR15 mil-spec trigger (I. Menu; Search for: Aero Precision 9MM Bolt Carrier Group | Direct Blowback - Nitride Upgrade your 9mm AR platform with the Aero Precision 9MM Bolt Carrier Group , designed for unmatched reliability and performance. Reply reply Ornery_Secretary_850 If its a direct blowback, then you will likely need a heaver buffer in the 6 oz range. 22 semi autos use. and that's where it ends, my AR9 build I completed months and months ago is on my profile and honestly, it looks just as cool Having shot a CMMG Banshee aswell with the radial delayed blowback gas system which is softer shooting and better for suppression than blowback Having grown up shooting an HK SP89, I didn't care much for the CMMG RDB. Endomags for direct blowback are a safety hazard and wear out over time. SKU: AERO-APRH200083C MPN: APRH200083C UPC: 840014621996 . The pistol comes standard with flip-up sights and a flat top receiver in addition to a quad rail handguard for a wealth of Apr 2, 2021 · A standard carbine buffer vs. Hydraulic buffer etc doesnt matter. Machined from 8620 steel and featuring a nitride finish, fracture resistant grade 23 titanium pin, and 4140 steel extractor, the EPC bolt assembly is precision machined from the ground up to Because of the blowback system it's a good idea to choose a heavier bolt carrier group and buffer. Machined from 8620 steel and featuring a nitride finish, fracture-resistant grade 23 titanium pin, and 4140 steel extractor, the EPC bolt assembly is precision machined from the ground up to meet the extreme demands of blowback AR platform firearms. For enhanced reliability, a fracture-resistant Grade 23 titanium firing pin has been included. Description Aero Precision 9mm Bolt Carrier Group, Direct Blowback – Nitride. You could also get something like an Odin Adjustable Buffer Weight, so that you can easily adjust the weight of that one buffer if they need to be two different weights. But I read the radial delay system has very radical ejection patterns, necessitating the entire length of the full size ejection port or reliable ejection. Mar 10, 2023 · How does direct blowback work? It’s arguable how far direct blowback mechanisms have existed. My competition gun runs extremely soft for direct blowback. One magic number on a 9mm direct blowback is to try and achieve 19-20 ounces between the bolt carrier and the buffer combined. Its not quite MPX soft out of the box but putting the proper locking piece to match the ammo gets it pretty dang close with factory ammo. Just to buy a banshee upper is nearly $700. Blowback action isn’t ideal for that. My AR9 still isn’t assembled yet, hunting and watching for deals to keep the cost down. For direct blowback Mean Arms built the ejector into the magazine. Next to no for bounce, in fact the dot just wiggled to the right. You can find various extended length solid 9mm buffers from about 5-7oz. But its not that much better than direct blowback with a hydraulic buffer and a heavy bolt imo. If you're going to dedicate your build to using Colt pattern magazines, such as the Metalform 32 round magazines, then you can use one of our CMMG MK9 bolts. the mpx has the least muzzle movement but a sharper recoil impulse. The Space Invader has the advantage of looking cool. Then add a 308 spring and you should be good to go. How to Build a Good AR9 Pistol. Radial Delayed Blowback allows reliable operation without a heavy bolt, buffer or spring. “direct”, “plain”, “straight” blowback)? In a simple blowback firearm operating system, there are no locking bolt lugs, or any other mechanical locking or delay mechanisms, to keep the breech closed during firing. The banshee is the best balanced 9mm pdw out of the bunch. Problems are that is is still blowback, so while it's on par with a decent AR9 setup it's not as good as the best AR9 blowback setups or most any delayed blowback system. The mag release will need to be milled to lower the magazine in the magwell. The Dead Foot Arms AR9-SD is a Complete Direct Blowback Upper Receiver chambered in 9MM. It has to do with the force exerted on the hammer by the BCG. The RDB system definitely is an improvement over direct blowback in terms of felt recoil and as a suppressor host (what I am more worried about). I dont have an ar 9 so I can't say for sure but dunking your whole bcg in oil seems excessive as far as I know you only need to oil on the 4 rails where the bcg slides along the upper. Dedicated Ar9 lower with a LRBHO is the way to go imo. VG6 brake. That's why 9mm is almost always direct blowback and direct blowback needs weight to keep the chamber closed for pressures to drop safely. Radial Delayed Blowback A prime example of our Aim To Be Different mantra is our patented Radial Delayed Blowback system. We carry all of the buffer parts that you need to help your 9mm blowback BCG run smoothly. There are 3 parts to the recoil experience in a blowback AR. Open menu Open navigation Go to Reddit Home. I believe that spread in recoil also attributes to the flatter shooting of the rdb, vs the muzzle rise from the blowback. Timney, Stern, RISE, and a couple others make PCC drop in triggers. Most captured systems barely make up for the weight of the removed mass. Aero EPC LPK. In a basic blowback firearm system, there's no mechanical lock to keep the breech shut during firing. The Dead Foot Arms 16" AR9-SD is a Complete Direct Blowback Upper Receiver chambered in 9MM. Jul 6, 2016 · Okay, crazy question so bear with me. Second off is you need a heavier buffer for direct blowback so if you want to swap calibers etc you will probably be swapping buffers. But I would say that the franken banshee is 5% softer than that. Either you go CMMG-RDB and spend $$$$ on their system and proprietary magazines, or you go regular blowback and spend $$$ on Endomags+Pmags, or regular blowback and spend $$ on the Stern adapter and use glock magazines, or spend $$ and just get a dedicated 9mm lower/upper (the new Aero EPC looks nice). Cmmg radial delay system should theoretically be quieter. Why does an AR9 have to be a blowback system? From what I have read, the 9mm blowback has a sharp recoil (not unbearable or anything, just a heavier recoil than expected). ORDERS PLACED AT THIS TIME ARE SHIPPING 1-3 DAYS. The modern AR-9 is based on the Colt Model 635, better known as the Colt 9mm SMG, which was introduced in the early 1980s. The weight helps with recoil but it was on the high end compared to all the firearms tested here. Unlike uppers which are specifically for direct blowback AR9s, the G4 has the pocket milled for the bolt cam that both standard AR BCG's and the RDB system uses. A. The Aero Precision EPC/AR9 Bolt is the core of yEPC build. Example: A 7oz "equivalent" SCS requires removal of the 3oz. All of those gadgety buffer systems were designed for the gas operated system, not blowback. Built my own blowback ar45, works fine. On a rifle/direct blow back you need to put a fixed spacer in there so it doesn’t move (risking a baffle strike). I've read other's accounts of the differences in recoil between DB and RDB action; now after shooting both, I'm a believer. 15” Atlas hand guard. S. k. Like, a pin drilled through your receiver that sits against the back of the gas key, or a pin that blocks the buffer from moving rearward. The idea is to get something short barreled + dedicated suppressor under the hand guard, but I want a gun with some kind of lockup (whether it’s ar-style or roller delayed) because it’ll be more conducive to suppressor usage. Feb 28, 2022 #4 alucard0822 For great Justice And I’m assuming the AR9 is a direct blowback? If so, a 5 ounce should be good for an 11-inch 9mm, and a gas-adjusted 16”. And, also as above, I think it's recommended to have a buffer > 5. The Upper also comes with MP5 Blade style front sight and rear sight drum, The recoil did seem very similar to a direct blowback despite having a "hydraulic buffer" system. Secondly, delayed blowback guns are horrible for getting gas in your face since the chamber opens at such high pressures. the super safety lever was contacting the additional weight and wouldn’t allow for it to function properly. If you want a good AR9, then buy a CMMG radial delayed blowback upper. Aero EPC buffer, buffer tube, and spring. I was able to grab the cmmg bolt/barrel on a hot deal. Mass is everything in blowback. Apr 12, 2020 · Lighter bullets with fast powders is the ticket for AR9s for the games. 223/5. I was surprised I didn't notice much of a difference compared to my direct blowback AR9 (w/ 5. I ran a 12oz short stroke SCSS, and it feels pretty good, but stupid expensive for what it is, and had better luck with Kynshot, also a direct blowback setup, but dampened to be a little smoother and quicker. Get over it Its softer/ smoother than any direct blowback without a doubt. proper extended length buffer for 9mm blowback: carbine buffer, carbine buffer spacer, extended length (4″) buffer. r/AR9 A chip A chip No matter what route you go here you're gonna be spending some money. 3 Oz or so for a PCC (and some add a 308 buffer spring); reason for that is that the direct blowback has much more force than a 556 (same reason for the different FCG). Its damn reliable and pretty soft shooting actually ( mostly due to being heavy) Unilke the gas operated system of an AR-15, the blowback 9mm is highly dependent on the mass of the buffer and the bolt to keep the breech from opening prematurely. Geiselle triggers aren't meant for direct blowback. The included FULL AUTO compatible 9MM BCG will work with Glock, Colt, Endo, and MP5 magazines. Made in the U. 56 upper. I dont know about the keltec but the ruger pc9 has a heavy bolt and a single spring thats really it for the operating system. No mag fit or sit issues, always feeds and ejects, and LRBHO works with all mags. Apr 6, 2021 · Nowadays, many 9mm PCCs will use a radial or roller delayed type system, but our AR-9 build kit sticks to direct blowback. Jul 11, 2018 · Wilson optimizes its AR9 barrels for suppressors with minimal gas blowback. You Hey dumbass read it again. An extra power recoil This is correct. Apr 2, 2021 · What is “simple” blowback (a. The bolt on 9mm AR direct blowback guns are lighter than most direct blowback weapons. Alot of people have had light strikes with bendy bill stuff in direct blowback. A direct blowback gun is low tech But that's not a bad thing. Essentially, it was a 9mm version of the M16 that used a closed bolt direct blowback system instead of the M16’s direct impingement gas system. Worked like a charm, no issues at all. My friend has a direct blowback 9mm ar9 (it might be a foxtrot mike), and it's quite a bit snappier than my radially delayed blowback. You need something a bit beefier to Does the Aero EPC 9 use a standard (blowback) 9mm BCG? So, I have no official experience with the LAW tactical folding adapters, but I made a Sylvan Arms folding adapter work with a AR9 by removing the pinned weight from a 9mm BCG. But today, virtually all AR9 receivers and bolts are designed to work with standard 9mm GLOCK magazines. Machined from 8620 steel and finished with a sleek nitride coating, this BCG not only offers superior durability but also ensures smooth operation in direct blowback systems. When you drop the magazine, you drop the ejector as well. 6 pounds, 14" long, and takes Glock mags. It says OR PISTOL CALIBER VERSION OF THE AR15/ M4 PLATFORM. They can also be quite picky on what ammo they'll run. You might actually have some better results with an AR10 spring if you think you're currently bottoming out. The gas pressure of the chamber itself is what forces the bolt backward to cycle. the This is how all recoil mitigation systems in simple blowback work. are a different system, using mechanical delays to reduce felt recoil) The Gentle Recoil system is the result of my study of the blowback system and ways to reduce felt recoil. I pieced together my own and it's actually my favorite trigger now. Don’t let your your bolt hold you back, get the EPC/AR9 bolt from Aero Precision I haven’t decided on barrel length but I do know I would prefer under 16”. 308 recoil spring? Don’t! Instead, use a standard strength carbine recoil spring, or for reduced spring noise, a carbine flatwire spring. Now you understand that while the AR9 and AR-15 look similar, they have significant differences — Let's start selecting the parts to build. com Getting the simple blowback 9mm AR to run 100% is easy if you can avoid all the popular misinformation and nonsense found in crusty old arfcom posts and gun store myths. All blowback systems feed higher than the CMMG RDB system because a blowback bolt is essentially a bolt carrier without a bolt. Jan 31, 2020 · We both agree that the Direct Blowback (DB) action has a noticeably and unmistakable harsher recoil than the CMMG RDB equipped AR-9. the ar9 had a little bit sharper recoil impulse than the mpx and slightly more muzzle movement. we tested a full-size mp5 vs a 16" ar9 with a hydro buffer + spacer + flatwire spring + nero 9 brake vs a 16" mpx back to back to back. Jul 18, 2024 · In recent years, they’ve become increasingly popular. The FORWARD charging upper receiver will attach to most AR9 and AR15 lower receivers. I can run my milspec lower for both the banshee and my 5. The muzzles are threaded 5/8×24 TPI and come equipped with QCOMP flash suppressors, which have multiple ports to reduce muzzle climb. Whereas, the blowback has only one recoil impulse when the bolt hits the back of the buffer tube, but its also harsher compared to the rdb, which is more spread throughout the action. BOLT FEATURES: Machined from 8620 Because there's no gas system, AR9 direct blowback is actually a lot more bolt force than an AR15 and often requires a heavier spring for proper timing (depending on bolt/buffer weights of set up and loads shot). Feb 28, 2022 · Same question for an AR9 or AR45 PCC. Why is direct blowback the only option on the market for AR9’s? Id like to build a 9mm carbine similar to a MP5 or Sig MPX but do not want a direct blowback system. The gun is compact and fits nicely in a standard backpack with a 33 round glock mag. Its really not a comparison. The force of the bullet going down the barrel pushes the bolt back. The "safe" thing to do is get a dedicated PCC trigger, but that's more money. With pistols, we want heavy bullets, but the blowback AR9 is a different animal. A gas system would be much cleaner, less recoil and more tune-able. When CMMG first came out with the RDB design, after shooting my AR9 at the range, the guy in the next lane offered me to shoot his new RDB built. equivalent Would you use a 4oz buffer in simple The second when the buffer bottoms out. Reliability has been perfect thoughthats the biggest positive about blowback systems, their simplicity typically means they’re highy reliable. Made from carbon steel, the match-grade barrels feature 1-in-10-inch twist button rifling. Its not rocket science ruger and keltec both have direct blowback systems that dont require an Ar style buffer setup. I love the MP5, but I will never understand paying $1000+ for something that kinda looks like an MP5 but doesn't have the only advantage of an MP5 (roller delayed blowback). I will bet it doesn't have the dwell time to reset the stage properly and its not getting properly reset. That's why blowback 9s are fun. Long story short, the CMMG lower is the way to go. Windham Weaponery AR9 5" build upvotes Another reason for not allowing the AR9 bolt to recede too far back is to prevent the bolt carrier group from striking the bolt catch and smashing it open, a common result of using a standard AR15 buffer in an AR9 system. The SCSS is just straight unlocked blowback, so the bolt velocity is directly proportional to the actual buffer mass. Why not make it a gas system and it be softer recoiling? The . A place to discuss variants of the AR series that Gibbz AR9 lefty side charging receiver set Broad River Tactical blowback barrel B&T can Maxim RD buffer with a different spring and 1oz of mass added The loudest you hear when outside is the bolt slamming shut. 9mm doesn't really have enough gas to work a direct impingement system like 223. Standard operating procedure for unloading a loaded semi-auto firearm is to: Oct 16, 2024 · The reliable nature of direct blowback mechanism, combined with the soft shooting feel, the great egos, and excellent trigger are what make me consider the PMXs one of the best straight-blowback I love my banshee upper, especially with the endo mag conversions. My buddy who has been shooting pcc since well it was popular and I were messing around with it last week. I am using Magpul g17 10rd magazines, loaded with fiocci 9mm rounds. The cmmg rdb setup is nice and its a step up from direct blowback for sure. The Radial Delayed Blowback system paved the way for larger caliber PCCs in an AR platform. 5oz buffer+AR10 spring). If you want this to be your forever gun, then we have a ballpark budget to work with. I know most direct blowback AR9's have heavier buffers to delay the bolt opening, but wouldn't a super short 4" or 5. I have some options available and going with the conventional blowback isn’t the end of the world. Mass is literally everything in blowback operation since there are no locking lugs. Aero EPC 9mm upper/lower. r/AR9. Just a little disappointing. With direct blowback guns that don’t have locking lugs. a. . Machined from high strength 8620 steel with a slick salt bath nitride finish, the EPC bolt carrier group provides a great combination of durability and reliability. For a direct blowback AR9 in selective fire, a bolt with sliding weights is important to prevent the bolt bounce that leads The Aero Precision EPC/AR9 Bolt is the core of your EPC build. The Dead Foot Arms AR-MP9 is a Complete Direct Blowback Upper Receiver chambered in 9MM. I havent seen the mean arms one yet, i heard about it and it sounds good. Which makes malfunctions hard to clear and easily allows for a ND. by trimming some of that weight off he was able to get it to properly catch and reset. The AR9 uses a standard AR-15 upper receiver. Same I think the Cmc in my AR9 is the worst trigger ive ever tried, owned and still have in my whole armory. I could be wrong though it could be different on an ar9 compared to a standard ar. Thats exactly what it a direct blowback Ar9 literally the name of this sub reddit. Bolt Features: Machined from 8620 Also, the pcc triggers seem to be built up a bit more than the standard ar15 versions so they can handle that blowback action. This bolt also has a heavy duty For a pistol you need a piston adapter on the suppressor for it to cycle (unless the pistol is direct blow back which is rare). Even the heaviest, most expensive $300+ captured system is awfully light for simple blowback. Geiselle has said it multiple in various forms of media. To me the direct blowback AR9 has a bit heavier recoil impulse due to heavier reciprocating mass, and is in general a bit heavier. Best non-direct blowback PCC? I’ve wanted a 9mm PCC for a while, but as close as I’ve come to ordering an EPC, I’m holding out for something non-direct blowback. The included 9MM BCG will work with Glock, Colt, Endo, and MP5 magazines. Please note that unless specifically stated, none of the information on this site applies to the CMMG Banshee, which is mechanically delayed blowback. The CMMG RDB Radial Delayed Blowback, with a 3oz buffer, is "sharp" with much more recoil and dot bounce The CMMG RDB Radial Delayed Blowback with a 1 oz buffer is MUCH softer than the 3oz buffer. Its about time we had more manufacturers working on better operating systems. Not as quiet as I would have liked suppressed. You can remove the fixed ejector from most lowers to make them compatible with the RDB, but the CMMG lower will not function correctly with a direct blowback upper requiring the fixed ejector. Old 9mm AR builds used Colt 9mm magazines. The Aero Precision 9mm BCG is the core of your EPC build. Aero APRH200083C: The Aero Precision EPC/AR9 Bolt is the core of any EPC build. super confusing as Banshee is basically anything with a short barrel from CMMG so not just RDB. Its really impressive and most cannot believe that its box shelf 115 grain ammo. 16” BA 9mm barrel. Piston has a spring that allows some movement. Machined from 8620 steel and featuring a black nitride finish, fracture-resistant grade 23 titanium pin, and 4140 steel extractor and bolt guides, the EPC bolt assembly is precision machined from the ground up to meet the extreme demands of blowback AR platform firearms. I think CMMG recommended an oversized large Apr 22, 2023 · I don't mean to sound like a dick, but you don't really know what you're talking about. Feb 29, 2024 · The AR9 lower receiver you choose largely depends on what type of magazines you want to use. Not the softest shooting, most accurate, best suppressor host, or reliable of the group, but it does each of them well enough compared to the shortcomings of the rest. There are several recoil systems designed for the AR9 as well. ---- I would agree in regards to the CMMG Banshee which is the title of this thread so in full agreement. If you do go colt mag adaptor then I wouldn't use the cmmg bolt and barrel. This is also why the buffer needs to be longer to take up the slack in the action. TIA. Yeah I totally understand. May 14, 2017 · Blitzkrieg Components has partnered with KynShot to develop a game-changing new 9mm AR-15 hydraulic buffer. I read ejection patterns are pretty consistent with fixed ejectors on direct blowback AR 9mm. Just ordered a CMMG Banshee and I want to put Maxim defense cqb brace on it with JP silent capture spring but I’m not sure which spring to get with… Eh a little bit. I think DI and Radial Delay Blowback, and possibly Roller Delay Blowback might be able to use standard AR15 drop in trigger groups. Its a plastic ejector on top of the mag. I mean direct blowback is kinda lazy and the prices for some of these guns are crazy. The 109T is a direct-blowback AR9 style pistol from SAR USA. But once it’s finished, I’ll have the custom firearm I wanted for less then the price of a stock complete banshee Looking to do a build, I wanted to go with a roller delayed blowback utilizing the cmmg bolt and barrel , or a direct blowback using grs system What are your experiences, in my opinion rdb is awesome, but direct blowback is simpler with less chances to fail Direct blowback is more reliable. In fact its more likely to work without needing to be tweaked unlike direct blowback. By tuning the system with either bolt weights, hydraulic buffers and buffer springs you can get it to shoot very smooth. Paul See full list on offgridweb. e. The TNW Aero Survival Rifle (ASR) is not technically an AR9 - it's a hybrid takedown with easily removable barrel and huge barrel nut, but no handguard. 5" have less back pressure due to shorter dwell time, and work with a slightly lighter buffer? I'm wondering because I have a 5. This drop in buffer upgrade converts a straight-blowback AR I have two 9mm CMMG rdb guns, one runs off a Colt mag and one runs off Glock mags. That's a direct blowback upper and if you're gonna try to make it go brrr id be very wary of the high likelihood of out of battery detonation. The RDB system is a bit less picky and uses a standard carbine buffer, which is lighter than your standard 9mm buffer. But in comparison to my old direct blowback and other people's direct blowback Ar9's its probably like 15-20% softer. I suggest the Blitzkrieg with the JP flat wire spring. In 1883 Hiram Maxim patented a blowback-operated rifle. I'm so happy with the performance of the CMMG RDB, I'm selling my PSA. That extra weight on top of straight blowback action can beat the hell out of your trigger. (RDB, roller delayed, magnetic delayed, etc. 2) Are you using an extra power or . The bcg mass in an ar9 is usually significantly higher than the run of the mill ar15. Unfortunately though you trying to make a budget build in a somewhat niche caliber as far as pcc's go. Taming the violent direct blowback forces in the 9mm system, it turns your 9mm AR Oct 5, 2023 · The AR9 is a direct blow back system without the gas block or gas tube to cycle the bolt like an centerfire 5. I currently have an AP5 and have owned a blowback ar9, sig mpx, MP5K (PTR and MKE) flux raider, Uzi pro, and sub2000. Machined from 8620 steel and featuring a nitride finish, fracture resistant grade 23 titanium pin, and 4140 steel extractor, the EPC bolt assembly is precision machined from the ground up to meet the extreme demands of blowback AR platform firearms. For anyone unfamiliar It's called an "Aero survivial rifle" but they're not affiliated with Aero Precision. If the cmmg parts are to hard to find or expensive than get a colt mag adaptor. This allows the folding adapter's insert to function as normal. pretty much everyone agreed that the mp5 shot the softest but had the most muzzle movement. Roller Delayed Blowback, 3. Magwell adaptor only one of them has a LRBHO and the mag release is kinda funky. But I use hopps gun lube and put just enough on the 4 rails on the bcg. Bernard Fasoldt patented a blowback mechanism for a single-shot rifle in 1876. Sounds like your a wannabe know it all with the reading comprehension of a middle schooler. The Aero Precision EPC/AR9 Bolt is the core of your EPC build. Direct blowback is what most . Heavier bolts make for lighter recoil, and there just isn’t much space to make a heavy enough bolt in the AR for a direct blowback gun, and springs and buffers can only do so much. bolt mass, making it now a 4oz. "Do I need a special upper receiver for my AR9?" No. Direct blowback isn't gas operation. They require modificatin to work properly. Much Feb 7, 2022 · While a normal AR-15 is built with a locked breech and uses a form of direct impingement to function, an AR-9 is normally simple blow-back. The design is a little different but it can use a few of the same parts as an AR9. 56 bolt should work for the 9mm as they are the same case head size Its not any different assembly than a direct blowback. the issue he had was that the ar9 is direct blowback and not gas driven meaning that the bolt has to have additional weight to reciprocate. But a direct blowback gun shouldn't exceed $2000 because past that threshold you're reaching delayed blowback territory which is an objectively better platform. Also forward assist on direct blowback is an absolutely horrible idea imo. I think the limiting factor is when you're setup for straight blowback. I've been looking into PCCs, haven't been particularly enthusiastic about the idea of direct blowback, proprietary magazines, or the standard AR-9 platform, then I came across this and I am quite intrigued. I did notice that charging is REALLY stiff. The other one that looks amazing is the angstadt roller delayed especially since it doesnt use a buffer tube. "Gentle Recoil" 9mm AR Project With help from all the high speed video and Overmass Project work I've been doing, I was able to put together a configuration that I think is the ultimate gentle recoiling straight-blowback 9mm AR. 56 AR15. Aero EPC direct blowback BCG. The Juggernaut with the Scheel Roller Delayed Blowback buffer is very soft. Bolt Features: Machined from 8620 Aero Precision 9mm Bolt Carrier Group, Direct Blowback – Nitride The Aero Precision EPC/AR9 Bolt is the core of your EPC build. ALG ACT) and be fine if I grab anti-walk pins? I have an Aero EPC-9, which I know a lot of PCC drop ins won’t fit. If you insist on direct blowback, you're really going to need to do some bubba shit to lock it forward. I’m not in a hurry and might spend some time researching…and waiting…for other non direct blowback options. zukh picxtv lpqf ojwwwv srw ibmc xlt awbgf qbugyv wdzsk