Rock River Arms BB2560 R-4 Carbine NATO 6 POS CAR Stock 16″ Barrel Black
The R4 Carbine has a 16″ chrome-moly barrel with an R-4 profile and a 1:9 twist. The barrel is capped with an A2 flash hider with 1/2-28 threads. The LAR-15 Carbine has R-4 handguards, RRA 6-position tactical CAR stock, A2 pistol grip and an RRA tactical mount with an A2 sight. Comes with 1-30 round magazine, RRA hard case, manual and warranty.