Bear Creek Arsenal BC-15 .300 Blackout 10.5in Bolt Action Style Upper Receiver Heavy 1-8 Twist 5/8×24 Flash Hider Parkerized

Bear Creek Arsenal BC-15 .300 Blackout 10.5in Bolt Action Style Upper Receiver Heavy 1-8 Twist 5/8×24 Flash Hider Parkerized. 300 Blackout upper is compatible with any mil-spec AR-15 lower. Magazine not included. Specifications for Bear Creek Arsenal BC-15 .300 Blackout 10.5in Bolt Action Style Upper Receiver: Manufacturer: Bear Creek Arsenal Caliber: .300 AAC Blackout Barrel Length: 10.5 in Barrel Profile: Heavy Barrel Twist Rate: 1-8 Threads per Inch: 5/8×24 Muzzle Device: Flash Hider Finish: Parkerized Color: Black Gun Model: AR-15 Handguard Length: 10 in Gun Rail: M-LOK Gun Make: AR Platform Weight: 4.25 lb Flutes: No Package Contents: Bear Creek Arsenal BC-15 .300 Blackout 10.5in Bolt Action Style Upper Receiver What firearm models does the manufacturer say Bear Creek Arsenal BC-15 .300 Blackout 10.5in Bolt Action Style Upper Receiver is compatible with? The manufacturer suggests that Bear Creek Arsenal BC-15 .300 Blackout 10.5in Bolt Action Style Upper Receiver is compatible with AR-15Bear Creek Arsenal UABA-301-300PHB10.518-10ASR: BC-15 .300 Blackout 10.5in Bolt Action Style Upper Receiver Heavy 1-8 Twist 5/8×24 Flash Hider Parkerized