ArmaLite M15A4 Complete Upper Receiver Assembly 5.56 NATO 16" M4 Barrel AR-15 EK0446B

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Utilized by agencies all over the country and now available to all tactical shooting enthusiasts, the ArmaLite EK0446B features the M203 stepdown barrel for tactical or Law Enforcement accessories. This upper includes double heat shield handguards.

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.

Specifications and Features:
5.56x45mm NATO caliber (accepts .223 Remington)
16" Chrome Lined, Chrome Moly Vanadium Barrel with M203 step down
1:9" Right hand rifling twist
A2 flash suppressor
A2 Front sight base assembly
7075-T6 Aluminum forged flattop with Picatinny rail