Bear Creek Arsenal BC15 7.62×39 16in Bolt Action Style Upper Receiver Heavy 1-10 5/8×24 Flash Hide Nitride

Bear Creek Arsenal BC15 7.62×39 16in Bolt Action Style Upper Receiver Heavy 1-10 5/8×24 Flash Hide Nitride. 62×39 upper is compatible with any mil-spec AR-15 lower. Magazine not included. Specifications for Bear Creek Arsenal BC-15 7.62×39 16in Bolt Action Style Upper Receiver: Manufacturer: Bear Creek Arsenal Caliber: 7.62x39mm Barrel Length: 16 in Barrel Profile: Heavy Barrel Twist Rate: 1-10 Threads per Inch: 5/8×24 Muzzle Device: Flash Hider Color: Black Gun Model: AR-15 Handguard Length: 15 in Gun Rail: M-LOK Gun Make: AR Platform Weight: 5.5 lb Package Contents: Bear Creek Arsenal BC-15 7.62×39 16in Bolt Action Style Upper Receiver What firearm models does the manufacturer say Bear Creek Arsenal BC-15 7.62×39 16in Bolt Action Style Upper Receiver is compatible with? The manufacturer suggests that Bear Creek Arsenal BC-15 7.62×39 16in Bolt Action Style Upper Receiver is compatible with AR-15Bear Creek Arsenal UABA344762CHB16110SSBCF15ASR: BC15 7.62×39 16in Bolt Action Style Upper Receiver Heavy 1-10 5/8×24 Flash Hide Nitride