16" 5.56/.223 AR-15 M4 KEYMOD UPPER ASSEMBLY

Product Code: 16" 5.56/.223 AR-15 M4 CONTOUR UPPER ASSEMBLY
In Stock
Price: $269.95$399.95

Available Options

Lower Parts Kit:

Add BCG:

Add Charging Handle:


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Action: Semi-auto

Gas System: Carbine Length Gas System

Chamber: 5.56 NATO/.223 Wylde

Twist Rate: 1/8 button rifled* 

Muzzle Device: Thread 1/2 X28  muzzle brake  

Barrel: 16" M4 contour, 4150V steel, chrome moly, heat treated, black, M4 feedramps, .750 gas block diameter

Handguard: Rifle length keymod Free Float

A3 flat top upper receiver - Made from certified 7075-T6 aluminum forgings, black hardcoat anodized to gov. specs.; forward assist and dust cover installed

Does not come with BCG and Charging Handle. Can be purchased separately. Twist of the barrel may vary between 1/8 and 1/9, depending on stock availability. 


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