ADA Brace Solution / MFI 9" Barrel Extension / with ONLY 1/4" Pilot Hole for your DIY custom thread with up to .65 Caliber / Large 0.692" I.D. Lettering is INDEXABLE / ADJUSTABLE in position. Choose front cap and base tubeto complete the shroud. These factory original and aftermarket CX4 parts will ensure that your carbine functions great with every trigger pull. 712-330-7163 Designed specifically to fit the HK SP5 Pistols to extend the barrel to BATF 16" Legal Length. Great mini muzzle device that helps with the noise for shooting at the range and extends back into the 15" handguard for the look I wanted. Reloading. MFI GSG5 / ATI M4 Navy Seal Marked Fake Silencer (Price includes USPS Priority Mail & Insurance). Guntec USA AR 9mm Mini Slip Over Barrel Shroud w/Multi Port Muzzle