The black rain ordnance spec series is a line of ar-15 rifles and pistols built to meet bid requirements for law enforcement and military personnel and as an affordable option for civilian use.The spec15 socom plus model is an enhanced version of black rain's spec15 carbine.It uses a direct impingement gas system, has a low profile adjustable gas block, and a nickel boron-coated bcg.It has a forged aluminum upper and lower receiver, 4150 chormoly barrel and a 15" handguard.This 5.56 model has socom profile 16" barrel with a2 flash hider, magpul moe pistol grip, moe-sl buttstock, and a black hardcoat anodized metal finish.Action: Semi-AutoCaliber: 5.56x45mm NATOBarrel Length: 16"Capacity: 30+1Trigger: G.I. TriggerOal: 32.50"Weight: 7.40 lbsStock Description: Adjustable B5 SopmodMuzzle: A2 Flash HiderReceiver Material: 7075 T6 AluminumSights: None, Optic ReadyBarrel Description: 4150 Chrome MolyTwist: 1:7"Barrel Length Range: 16" to 16.99"Weight Range: 7 lbs to 7.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Brown/Tan