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Rock River Arms R3 Competition Upper


The Rock River Arms R3 Competition Upper features a Rock River Arms 18 inch stainless steel, fluted, cryogenically treated barrel chambered in .223 Wylde, with a 1:8 twist, mid-length gas system, and a 1/2-28 threaded muzzle.  Built on an RRA forged A4 flat top receiver with a low profile gas block, RRA lightweight M-LOK compatible 17 inch free float handguard, and an RRA tuned and ported muzzle brake.

Colt 11.5 Lightweight Upper


Caliber: 5.56x45mm NATO
Barrel: 11.5”
Twist: 1:7
Sights: Magpul Flip-Up Rear, A2 Front
Muzzle Device: A2 Flash Hider
Handguard: M4 Style