Colt Upper Assembly Kit AR-15 16.1 in 5.56x45mm 1-7 Twist 1/2x28 No Handguard Black. 1 inch 5.56x45mm Upper Assembly Kit was made in order to be the ideally suited product for any person looking for a top quality choice.. Formulated working with several of the very most robust and long lasting resources in existence these AR15 Upper Receivers through Colt offers you a product that will give you many years of reliability. Colt has been making high quality merchandise for a number of years and the Colt 16.1 inch 5.56x45mm Upper Assembly Kit is their particular manner of demonstrating just how much they care. Here at OpticsPlanet we ensure that it is our obligation to get the best solution for your requirements and featuring the Colt 16.1 inch 5.56x45mm Upper Assembly Kit is a thing that we are delighted to offer. Specifications for Colt 16.1 inch 5.56x45mm Upper Assembly Kit: Manufacturer: Colt Caliber: 5.56x45mm NATO .223 Remington Barrel Length: 16.1 in Barrel Profile: M4 Gas System Length: Carbine Length Barrel Twist Rate: 1-7 Threads per Inch: 1/2x28 Muzzle Device: A2 Flash Hider Finish: Matte Color: Black Gun Model: AR-15 Condition: New Gun Type: Rifle Gun Make: AR Platform Magazine Included: No Package Contents: Colt 16.1 inch 5.56x45mm Upper Assembly Kit The Colt 16.1 inch 5.56x45mm Upper Assembly Kit is a quality addition to the Colt lineup. For more great deals on AR15 Upper Receivers by Colt please browse our Colt Gun Parts page. What firearm models does the manufacturer say Colt 16.1 inch 5.56x45mm Upper Assembly Kit is compatible with? The manufacturer says that Colt 16.1 inch 5.56x45mm Upper Assembly Kit is compatible with AR-15Colt LE6920CK-NHG: Upper Assembly Kit AR-15 16.1 in 5.56x45mm 1-7 Twist 1/2x28 No Handguard Black