Just pin this complete AR-15 upper assembly on any standard lower and you'll have yourself a great modern sporting rifle! This aluminum upper assembly from CORE15 has a 16" 4150 CMV M4 profile barrel with 1:9" twist and comes complete with charging handle and bolt carrier group. It is equipped with a low profile gas block and Magpul MOE handguard. Add your optic of choice and it's ready to go for patrol/duty, small game and varmint hunting or the range.

Specifications and Features
CORE15 11689
5.56 NATO (also accepts .223 Remington)
Aluminum flat top receiver with Picatinny rail
16" 4150 chrome moly vanadium steel barrel
1:9" twist rate
Charging handle
Forward assist
Dust cover
Bolt carrier group
Magpul MOE handguard
Low profile gas block
Black