PMA 16" UPPER RECEIVER CARBINE-LENGTH 5.56 NATO NITRIDE 13" LIGHTWEIGHT M-LOK B5 RIFLE KIT
Barrel Length: 16"
Barrel Profile: SOCOM
Gas System: Carbine-length
Barrel Steel: 4150V Chrome Moly Vanadium
Barrel Finish: Nitride
Chrome Lining: No
Muzzle Thread: 1/2x28
Chamber: 5.56 NATO
Twist Rate: 1:8
Barrel Extension: M4
Diameter at Gas Block: .750
Gas Block Type: Low-profile
Muzzle Device: A2 Flash Hider Muzzle Device
Receiver Material: Forged 7075 T6 Aluminum
Receiver Type: M4
Handguard Type: PMA 13" Lightweight M-LOK Rail
Bolt Carrier Group Included: Yes
Bolt Steel: C158
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Build Kit: B5 Systems Stock and Grip
Barrel: 16" 4150V Chrome Moly Vanadium steel, nitride treated for durability and accuracy, and chambered in 5.56 NATO with a 1 in 8" twist. Carbine-length gas barrel is finished off with a PMA 13" M-Lok Rail, a steel low profile gas block and a PMA Flash Hider.
Upper: PMA Forged 7075-T6 A3 AR upper receiver is made to meet MILSPECs and finished in hard coat type III anodized black for durability. These uppers are made for us right here in the USA by our ISO 9001 certified machine shop.
Bolt Carrier Group: Our bolt carriers are made of 8620 steel and machined to USGI standards. Our Bolt is made of shot-peened C158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. The extractor is machined from billet steel. The components are all properly heat treated to ensure the proper hardness and then nitrided for a slick finish that aids in functioning. Each BCG is then individually inspected on site for quality.
Build Kit: A high quality lower build kit with everything you need to assemble your AR-15 lower. Features a B5 Systems Grip, Lower Parts Kit, also includes a B5 Systems Buttstock, castle nut, latch plate, carbine buffer spring, 5 positioning mil-spec buffer tube, and standard carbine buffer.
*Shaded Grey items are not included