The wonder di (direct impingement) is the answer to a lightweight carbine with just the right amount of upgrades.The dictator adjustable gas block lets you tune your rifle to the exact operating speed it should be.Its patented e2 dual-extraction technology consists of four small channels cut into the walls of the chamber allowing a small amount of gas pressure to push against the neck of the spent case.The wonder di rifle also utilizes a non-adjustable single-stage and a mil-spec aluminum anti-tilt buffer tube which features "carrier cradle" extensions to ensure that the carrier is always supported by the buffer tube and has three drain holes.Metal Finish: Blue Titanium Cerakote/Black BarrelAction: Semi-AutoCaliber: 5.56x45mm NATOBarrel Length: 16.50"Capacity: 30+1Trigger: Single-StageSafety: ManualOal: 32"Weight: 6.18 lbsStock Description: 6 Position MFT MinimalistMuzzle: Muzzle BrakeReceiver Material: 7075 T6 AluminumSights: None, Optic ReadyBarrel Description: Match GradeTwist: 1:8"Barrel Length Range: 16" to 16.99"Weight Range: 6 lbs to 6.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Blued/Black