TacFire AR-15 5.56x45mm NATO 16in Upper Receiver 1-8 Twist 1/2x28 Nitride Black. 56x45mm NATO 16in Upper Receiver was made to function as the ideally suited product for any person in need of an exceptional selection.. These AR15 Upper Receivers through the professional product professionals at TacFire are made working with heavy duty and dependable materials to be able to supply you with a product that is going to be effective for a long time. Designed utilizing some of the most useful available substances and engineering these special AR15 Upper Receivers from the product specialists at TacFire will last an incredibly long time. TacFire has been making superior quality products for a very long time and the TacFire AR-15 5.56x45mm NATO 16in Upper Receiver is their particular approach to showing you just how much they care. At OpticsPlanet we ensure that it is our obligation to receive the perfect solution for all of your requirements and presenting the TacFire AR-15 5.56x45mm NATO 16in Upper Receiver is one thing that we are pleased to offer. Specifications for TacFire AR-15 5.56x45mm NATO 16in Upper Receiver: Manufacturer: TacFire Caliber: 5.56x45mm NATO Barrel Length: 16 in Barrel Profile: M4 Gas System Length: Carbine Length Barrel Twist Rate: 1-8 Firearms Threads Per Inch: 1/2x28 Handguard Type: M-LOK ATLAS S-ONE Muzzle Device: A2 Flash Hider Finish: Black Nitride Color: Black Gun Model: AR-15 Fabric/Material: Steel Handguard Length: 15 in Gun Rail: M-LOK Gun Make: AR Platform Package Contents: TacFire AR-15 5.56x45mm NATO 16in Upper Receiver What firearm models does the manufacturer say TacFire AR-15 5.56x45mm NATO 16in Upper Receiver is compatible with? The manufacturer says that TacFire AR-15 5.56x45mm NATO 16in Upper Receiver is compatible with AR-15TacFire SSBU55616: AR-15 5.56x45mm NATO 16in Upper Receiver 1-8 Twist 1/2x28 Nitride Black