Rock River Arms Lar-15m, Rra Bb0470 Rrage 3g Upper

Caliber:5.56mm nato chamber for 5.56mm and.223 caliberupper receiver:extruded aluminum a4 with port door/no forward assistbarrel:16-inch chrome molymuzzle device:a2 flash hider / 1/2-28 threadgas system:car length, with low profile gas blockhandguard:rra 15 inch rrage 3g handguard, m-lok compatibleweight:4.25 poundsincludes:bolt carrier group and charging handle assembly

Receiver Finish: Black
Type: Complete
Caliber: 5.56x45mm NATO
Barrel Length: 16"
Barrel Material: Steel
Twist: 1:8"
Barrel Finish: Black
Handguards: RRA RRAGE 3G
Handguard Finish: Black
Barrel Length Range: 16" to 16.99"