Infinite Product Solutions 2in Barrel Extension Black Phosphate - .223 Remington/5.56x45mm NATO/9mm Luger/.. Key for clearing handguards or maintaining barrel length requirements. This extension is precision made and accurately engineered available in nitrided 17-4 PH H1150 stainless steel black oxide steel or black phosphate steel for superior durability and a stylish finish. The divot on the nitrided models facilitates easy pin and weld applications ensuring compliance with legal barrel length regulations. Built to pass strict quality standards this extension is corrosion and water-resistant and easily accommodates rails and other barrel accessories. Specifications for Infinite Product Solutions 2in Barrel Extension: Manufacturer: Infinite Product Solutions Color: Black Phosphate Fabric/Material: Steel Finish: Smooth Gun Make: AR Platform Ruger Length: 2.625 in Width: 0.75 in Height: 0.75 in Gun Type: Rifle Features of Infinite Product Solutions 2in Barrel Extension Adds 2 inches to the shooter's barrel Accurately engineered and manufactured Divot on nitrided models for easy pin and weld applications for legal barrel length additions Easy to accommodate rails and other barrel accessories Passes strict quality standards Corrosion and water resistant Package Contents: Infinite Product Solutions 2in Barrel Extension What firearm models does the manufacturer say Infinite Product Solutions 2in Barrel Extension is compatible with? The manufacturer says that Infinite Product Solutions 2in Barrel Extension is compatible with AR-15 Ruger 10/22 AR-10Infinite Product Solutions 1228-EXT-2IN-BS: 2in Barrel Extension Black Phosphate 1/2x28 - .223 Remington/5.56x45mm NATO/9mm Luger/.