This Slip-On Barrel Shroud by Tacticool22 gives your barrel the finished look you’ve always wanted. Fits barrels up to 7/8 Inch diameter Any rifle or pistol with at least 1″ of exposed barrel Note: For custom orders, your rifle’s barrel diameter can be anywhere from .5 inch (12.7mm) up to .800″ (20.3mm) Just tell us your barrel diameter upon ordering to ensure a proper fit. Barrel Shroud Features Gives your firearm that classic look Helps protect you from a hot barrel Black, hard-coat anodized finish to MIL-SPEC Type III. Quickly and easily slips onto your barrel using a set screw. Does not lengthen the barrel. Does not quiet the firearm. Made in the USA. Barrel Shroud Measurements We offer multiple diameters to ensure a proper fit for your firearm. If you’re not sure which options to pick, please contact us. Diameter: Outside 1 1/8 inch Inside 7/8 inch Length: 4.5″, 6″ 8″ and custom length up to 10 & 3/4″ total length. Be aware that the end will be silver from machining for custom lengths. Bore (Barrel Diameter): S&W M&P15-22 (we already have the measurement) Performance Center S&W M&P 15-22 (we already have the measurement) .625 inches (5/8″) .750 inch (your standard 3/4″ AR barrel) Custom bore – From .5″ (12.7mm) up to .800″ (20.3mm) Instructions After Ordering To ensure a proper fit, please put the required information in the measurements section at the bottom of the checkout page. Barrel Diameter – Precise measurement at the muzzle and 1 inch back. Caliber Firearm Model Note: Measure using quality metal calipers or a micrometer to ensure a proper fit. Don’t worry, if you do not provide measurements during checkout, we will send you an email asking for the missing information.