Army Wants Upgrades to Improve M4A1 Carbine's Performance, Accuracy It features a heavier barrel and a full-auto trigger. The Army's decision to dump the current three-round burst trigger resulted in a more consistent trigger pull and better accuracy, weapons officials said. The selection of the M4A1 came out of the

Check out this 3D-printable bullpup for AR-pattern uppers While there aren’t many upper receivers that don’t require a buffer assembly to function, there are a few out there including rimfire uppers and the Faxon ARAK-21, a non-standard centerfire upper that uses a gas piston system. WarFary calls this the ...

Barrett Model 82A1 .416 Barrett Upper 29" Barrel 12649 ... Barrett Model 82A1 .416 Barrett Upper 29" Barrel ... Although it’s transported as a disassembled upper and lower receiver, ... Reviews for Barrett Model 82A1 .416 ...