Spikes Tactical ST Dynacomp in Shortyin Extreme - 5.56 Standard Version. Spikes Tactical machined these Muzzle Brakes & Compensators from 416 stainless steel complete with a black nitride finish to create an undeniably sturdy part that is highly resistant to corrosion and abrasion. When you install the Spikes Tactical ST Dynacomp "Shorty" Extreme Ball Dimpled Muzzle Device your recoil impulse and muzzle climb is greatly reduc4ed allowing you to take more precise shots on target with significantly quicker follow-up shots. Step up your game and impress your crew with this high quality Spikes Tactical ST Dynacomp "Shorty" Extreme 1/2 X 28 Muzzle Device. Specifications for Spikes Tactical ST Dynacomp "Shorty" Extreme Muzzle Device: Manufacturer: Spikes Tactical Color: Black Caliber: 5.56x45mm NATO Finish: Black Nitride Threads per Inch: 1/2x28 Size: 1.75 - in Country of Origin: USA Features of Spikes Tactical ST Dynacomp "Shorty" Extreme Muzzle Device: Material: 416 Stainless Steel Thread: 1/2 X 28 Finish: Black Nitride Features: Ball Dimpled Expansion Ports Length: 1.75 Weight: 2.4oz Package Contents: Spikes Tactical ST Dynacomp "Shorty" Extreme Muzzle Device Spikes Tactical SBV1021: ST Dynacomp in Shortyin Extreme - 5.56 Standard Version