United Defense Labs Ind. 9mm AR Bolt Carrier Group Works With Both Colt & Glock Mag Lowers
Pistol Caliber Carbines (PCC's) Are Some Of The Most Fun You Guns You Can Shoot. If You Don't Have One In Your Arsenal Now Is The Perfect Time To Add One. Not Only Are They A Blast To Shoot, The Cost Of Ammo Won't Drain Your Bank Account. 9mm are no exception to this. Part of ensuring the fun is having a reliable bolt carrier group. For this United Defense Labs has delivered a precision machined BCG for the blowback 9mm AR-15 builds.
Carrier is 416 SS - Nitride Coated
Rear weight is 12L14 and black oxide coated
Firing pin is 17-4 H900 heat treat
9mm Dedicated Extractor is 4140, black oxide coated
Will Reset Standard Hammers Including Most Aftermarket Hammers
Works with Silent Capture Spring systems