Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver M4 Barrel Carbine Length 1-7 Twist 1/2x28 Flash Hider Parkerized

Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver M4 Barrel Carbine Length 1-7 Twist 1/2x28 Flash Hider Parkerized. 56 Nato upper is compatible with any mil-spec AR-15 lower. Magazine not included. Specifications for Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver: Manufacturer: Bear Creek Arsenal Caliber: 5.56x45mm NATO Barrel Length: 16 in Barrel Profile: M4 Threads per Inch: 1/2x28 Muzzle Device: Flash Hider Gun Model: AR-15 Handguard Length: 15 in Gun Rail: M-LOK Gun Make: AR Platform Weight: 5 lb Flutes: No Package Contents: Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver Bear Creek Arsenal UAFC-4017-556CM41617-15TNGSR: BC-15 5.56 NATO 16in Upper Receiver M4 Barrel Carbine Length 1-7 Twist 1/2x28 Flash Hider Parkerized