AR-15 5.56/.223 16" M4 "BLACK SHARK" UPPER ASSEMBLY. We now offer this upper with 12" slim profile Mlok rail. We ship across USA.
Barrel: 16" M4 contour, 4150V steel, chrome moly, heat treated, phosphate finish, M4 feedramps, .750 gas block diameter.
Gas System: Carbine Length Gas System
Chamber: .223 Wylde (shoots both, 5.56 NATO/.223 REM)
Twist Rate: 1/8 button rifled
Muzzle Device: Thread 1/2 X28, custom steel shark muzzle brake 4"
Handguard: Midlength Mlok (12") Free Float, slim profile Mlok
A3 flat top upper receiver - Made from certified 7075-T6 aluminum forgings, black hardcoat anodized to gov. specs.; forward assist and dust cover installed
Note: Does not come with BCG and Charging Handle. May be purchased separately. Images may not be an exact representation of the product.