The M-15A2 National Match Complete Upper Assembly features a triple lapped, stainless steel match barrel and the strongest floating barrel sleeve in the industry.
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.
.875 at the Journal (Under the gas block)
Model: M15A2 National Match Upper Assembly with Black Free Float Handguard
Caliber: .223 WYLDE CHAMBER
Barrel: 20" Triple Lapped AISI 416R Stainless Steel with National Match Sleeve, M-4 Feed Ramps
Rifling Twist: 1:8"
Front Sight Base: A2 Front Sight Assembly with National Match Sight
Rear Sight: National Match 1/4 Windage 1/2 Elevation
Upper Receiver: 7075-T6 Aluminum