FAB Defense FX-4310B Glock 43 +4 Magazine Extension 4-Rd Polymer Black

The FAB Defense FX-4310B is a magazine floor-plate replacement for the Glock 43 that adds 4 rounds for a total of 10 rounds in the magazine. The special ergonomic design enables secure manipulation of the magazine and a full grip on the weapon when the magazine is in use, while contoured finger indents along the extension provide a firm, repeatable grip during reloads.

Constructed of fiberglass-reinforced polymer with a matte black finish, the FX-4310B features an innovative spring plate design that allows the use of the original Glock 43 magazine spring. Installation is a drop-in replacement of the factory floor plate. Also sold as the "43-10," this extension is designed specifically for the Glock 43 subcompact pistol.