Brownells Barrel Align Gauge Features The Brownells Barrel Align Gauge works by sliding down the bore of a 1911-pattern barrel chambered in .38 Super or 9mm until its centered tip locates the firing pin hole. On a properly fitted factory barrel the tip drops into place cleanly giving an immediate visual confirmation of correct alignment. Applying a small amount of layout fluid to the breech face before testing highlights the exact contact points making even subtle misalignment easy to see. This makes the gauge useful both for verifying new builds and for inspecting a used pistol before purchase. Machined from centerless ground steel the gauge measures 8-1/4 inches long and is built to hold its precision through repeated use on the bench. It is part of a broader set that also covers .40 and .45 caliber 1911 barrels giving gunsmiths a complete solution across common chamberings. Dealers can use it as a quick low-cost check when evaluating trade-in pistols for barrel fit issues. Anyone who works on 1911 pistols regularly will find this gauge a fast way to catch problems before they become range-day surprises. Brownells 1911 Barrel Align Gauge Specifications Brand: Brownells Model: 1911 Barrel Align Gauge Caliber: .38 Super / 9mm Material: Centerless Ground Steel Length: 8-1/4 Compatible Hosts: 1911 Available At: GrabAGun