G-Block kit delivers a market-first capability: now you only need a 9mm or .40 S&W upper with Glock-cut bolt and a milspec AR15 lower to shoot using Glock mags. The cost of buying a pistol-caliber carbine has just been cut in half.
The G-Block requires no permanent changes to your lower. With the included cutting guide, Glock magazines* can be altered to interface with any milspec AR15 magazine catch. TorkMag's G17 magazines are also compatible out of the box with AR mag catches. Each kit ships with polymer magwell blocks mated to a steel fixed ejector, a mag-cutting guide, and a hex key for press fitting the magwell blocks in position.