2023年12月28日 · I also SBR'ed it and bought the ATI MP40 stock. All-in-all, with the cost of the parts, tax stamp, stock kit, etc - I've turned a $500 gun into a $1K+ gun, but it works (and looks!) significantly better now and the common issues mentioned, like the cocking handle issue, the appearance, and the trigger - are all remedied now.

2011年11月14日 · After receiving my stamps form the ATF for the suppressor and building an SBR, I spent the afternoon assembling my new SBR. Its a 5" barreled 9mm with SWR suppressor. I had assembled most of the lower awhile back. Its a Spikes Biohazard billet lower with Spikes LPK and Timney trigger. I Cerakoted the lower sniper grey.

2023年12月2日 · Now that I’ve got a 9mm suppressor (hopefully) nearing approval, I’ve got a serious desire for a 9mm SBR. I’d like something as compact as possible and Glock mag compatibility is a necessity. I like the looks of the B&T APC9 Pro but I’ve never seen one in person. What are the other options besides it and some variety of AR9?

2022年8月11日 · They have decent capability for 100 yards and less, 9mm is cheap and widely available, and silencers work great on them. Some people use them for home defense. 5.56 SBR AR15s work great, but generally have longer barrels, work worse with a silencer, and use slightly more expensive ammunition.

2017年6月5日 · I'm just thinking in terms of what's comfortable to shoot. If I go ahead and built a 9mm AR SBR, I basically want the shortest barrel that's still comfortable to shoot. I've seen barrels as short as 4.5" and free float handguards down to 4". I figure at this length I'd get a quad rail type handguard and attach a VFG once the stamp comes through.

2024年2月18日 · A 9mm can’t be tamed down to the level of their fancy-parts 5.56 guns because the PCCs use a massive bolt to retard the case until pressure is safe and then that massive bolt slams into the buffer. Again, it’s not that they are punishing to shoot, it’s that they are slower to shoot than a 5.56 gun that is also set up properly.

2005年10月11日 · I own a 9mm and an SBR. The 9mm is much simpler to suppress and will cycle reliably with subsonic ammo. A suppressed 5.56 is not going to cycle with subsonic, and you will likely strike a baffle. And, IMHO the terminal ballistics of a 147 grain 9mm is nothing to write off. I have taken a hog and deer with mine. and my GF used the 9mm to take ...

2016年11月22日 · I would think so with some caveats. My Colt 6951 (semi-auto 16" flat top 9mm) upper runs fine on my Colt 614 (factory full-auto) lower, as does a Colt factory 10.5" 9mm barreled upper. You'll need a bunch of other parts, e.g., a 9mm ramped bolt, mag block. See the "Pistol Caliber Carbine" forum for details.

2019年4月22日 · There is a vast difference between being able to put a 9mm bullet on target at 100 yards as opposed to striking the target with sufficient energy to be effective. The Federal 124 grain 9mm bullet will loose about 25% of it's energy by 100 yards, and will only have around 253 foot pounds of energy.

2017年12月19日 · The 9mm seams simple just swap springs/buffer untill you get it tuned correct. Main thing I am trying to achieve here is a short, quiet, cheap (to feed) SBR to play with in the back yard. Something the daughter will enjoy shooting.