The black rain fission rifle features aa aluminum receiver with a flat dark earth battleworn cerakote finish, "let it rain" engraved on the dust cover, salt bath nitride coated spec15 bcg, direct impingement gas system 750 non-adjustable gas block, spec15 forged charge handle, 15" m-lok slim aluminum hand-guard and a magpul moe black grip and stock.Action: Semi-AutoCaliber: 5.56x45mm NATOBarrel Length: 16"Capacity: 30+1Trigger: G.I. TriggerOal: 34.50"Weight: 7.80 lbsStock Description: Adjustable Magpul MOEMuzzle: A2 Flash HiderReceiver Material: 7075-T6 AluminumSights: None, Optic ReadyBarrel Description: 4140 Chrome MolyBarrel Length Range: 16" to 16.99"Weight Range: 7 lbs to 7.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Brown/Tan