Bear Creek Arsenal BC-15 .223 Wylde 16in Right Side Upper Receiver Heavy Carbine 1-8 1/2x28 Flash Hider Parkerized ODG. This BCA AR-15 complete .223 Wylde carbine length upper has a 16'' heavy barrel with a parkerized finish and features a 1:8 twist rate with a carbine length gas system. It includes the BCA Talon 15'' MLOK split rail an M4 flat-top 7075 billet aluminum upper receiver a BCA bolt carrier group a flash hider and a right-side charging (Gen2) handle (patent protected). This .223 Wylde upper is compatible with any mil-spec AR-15 lower. Shop more .223 Wylde Uppers Magazine not included. Specifications for Bear Creek Arsenal BC-15 .223 Wylde 16in Right Side Charging Upper Receiver: Manufacturer: Bear Creek Arsenal Caliber: .223 Wylde Barrel Length: 16 in Barrel Profile: Heavy Gas System Length: Carbine Length Barrel Twist Rate: 1-8 Threads per Inch: 1/2x28 Muzzle Device: Flash Hider Finish: Parkerized Gun Model: AR-15 Handguard Length: 15 in Gun Rail: M-LOK Gun Make: AR Platform Weight: 5.5 lb Flutes: No Package Contents: Bear Creek Arsenal BC-15 .223 Wylde 16in Right Side Charging Upper Receiver What firearm models does the manufacturer say Bear Creek Arsenal BC-15 .223 Wylde 16in Right Side Charging Upper Receiver is compatible with? The manufacturer says that Bear Creek Arsenal BC-15 .223 Wylde 16in Right Side Charging Upper Receiver is compatible with AR-15Bear Creek Arsenal UASCC5042223WCHB161815ODGSR: BC-15 .223 Wylde 16in Right Side Upper Receiver Heavy Carbine 1-8 1/2x28 Flash Hider Parkerized ODG