TacFire 5.56x45mm NATO 10.5in Upper Receiver 1-8 Twist 1/2x28 Nitride Black. 56x45mm NATO 10.5in Upper Receiver. Established using several of the very most durable and long lasting resources in existence these AR15 Upper Receivers from TacFire will provide you with something that will give many years of stability. TacFire has been developing high-quality merchandise for a very long time and the TacFire 5.56x45mm NATO 10.5in Upper Receiver is their very own means of demonstrating how much they are concerned. Here at OpticsPlanet we make it our responsibility to obtain the most suitable solution for all your specifications and presenting the TacFire 5.56x45mm NATO 10.5in Upper Receiver is something that we are delighted to offer. Specifications for TacFire 5.56x45mm NATO 10.5in Upper Receiver: Manufacturer: TacFire Caliber: 5.56x45mm NATO Barrel Length: 10.5 in Barrel Profile: M4 Gas System Length: Carbine Length Barrel Twist Rate: 1-8 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: 10 in Gun Rail: M-LOK Gun Make: AR Platform Package Contents: TacFire AR-15 5.56x45mm NATO Upper Receiver What firearm models does the manufacturer say TacFire 5.56x45mm NATO 10.5in Upper Receiver is compatible with? The manufacturer says that TacFire 5.56x45mm NATO 10.5in Upper Receiver is compatible with AR-15TacFire SSBU55610: 5.56x45mm NATO 10.5in Upper Receiver 1-8 Twist 1/2x28 Nitride Black