The M-15(T) Complete Upper Assembly features a 18" triple-lapped stainless steel barrel floated within a rugged aluminum Quad-Rail handguard. The Picatinny Rail on the upper receiver allow rapid and repeatable interchange of removable scopes.
Each ArmaLite Complete Upper Assembly includes a forged upper receiver assembly, barrel assembly, bolt carrier group and charging handle assembly. All complete upper assemblies are test fired as complete rifles before shipping.
M-15 Uppers use 7075-T6 Aluminum.
.750 at the Journal (Under the gas block)
Caliber: .223 Wylde Match Chamber
Barrel: 18" Triple Lapped, AISI 416R Stainless Steel, Heavy, M-4 Feed Ramps
Rifling Twist: RH 1:8"
Muzzle Device: Flash Suppressor
Front Sight Base: Quad Rail Handguard