One piece Past The Barrel (PTB) adapter for ops inc 12th model, AEM5 and OCM5. Made from H900 heat treated 17-4 steel this one piece mount will allow you to mount your silencer to any 1/2x28 barrel that the O.T.B. adapter will not. Barrels with a OD larger than .75 or less than 2.95 inches of exposed barrel. This mount will add 2.90 to your overall system length. Made with integrated wrench flats in the rear for easy installation or removal with any adjustable crescent wrench.

Features :

• Raw Heat Treat Gold Finish
• 17-4 Steel
• Compatible with Ops Inc 12 model, AEM5 and OCM5