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The Apex Tactical M&P Barrel Fitting Jig gives you a stable platform that makes final fitting of Apex Grade Gunsmith Fit M&P barrels easy and consistent. The M&P Barrel Fitting Jig has a cutout that securely cradles the barrel, with a channel to guide your file so you can properly square the barrel lugs. There’s even a setscrew to lock the barrel firmly in place during filing; screw has a nylon tip to protect the surface of your barrel from damage.
Apex includes with the M&P Barrel Fitting Jig a jig slider that helps you maintain consistent pressure on the barrel while you fit the crucial bottom lug.