AR15 Parts Kit with Flat top upper without detachable carrying handle & rear sight - Build your own AR15 type rifle in 5.56 Caliber. Our kits include all parts necessary to put together an AR15 type rifle except for the the lower receiver. Sold as disassembled kits. Included are stocks, G.I. handguards, 16" barrel, flat top upper receiver and all internal parts. Parts are new or like new. All parts are now supplied with M4 type (4 position) telescoping stock. Sling and mag not included. No FFL required.
Our hammer trigger pin diameter is the industry standard .154. Some Colt made guns use .170 which is not compatible with our parts.
Barrels are chambered in .223 Wylde and have a 1:9 twist rate