AR-15 M-LOK Rail Build Kit with USB

Includes:

– Magpul MBUS Sight Set, Black
– Barrel Length: 16″
– Gas System: Midlength
– Barrel Profile: A2
– Barrel Steel: 4150 Chrome-Moly Vanadium (Unless Stainless Steel Build Kit is Selected)
– Barrel Finish: Nitride
– Chrome Lining: None
– Muzzle Thread: 1/2-28
– Chamber: 5.56 NATO
– Twist Rate: 1:7
– Barrel Extension: M4
– Diameter at Gas Block: .750
– Gas Block Type: Low-profile
– Muzzle Device: A2 Flash Hider
– Receiver Material: Forged 7075 T6
– Receiver Type: M4
– Handguard Type: PSA 13.5″ Lightweight M-Lok Rail
– Bolt Carrier Group Included: Yes
– Bolt Steel: Carpenter 158
– Bolt Carrier Profile: Full-auto
– Charging Handle Included: Yes
– Optics: Magpul MBUS Front and Rear Flip-Up Sights, Black
– Fire Control Group: PSA Enhanced Polished Trigger (EPT) FCG
– Overall Length: 24.5″
– Weight: 4.0 lbs