Fab Defense’s 43-10 is a magazine floor-plate replacement for the Glock 43 that adds 4 rounds for a total of 10 rounds in a magazine. The special ergonomic design enables secure manipulation of the magazine and a full grip on the weapon when the magazine is in use. Its innovative spring plate design, allows for the use of the original magazine spring. The 43-10 is constructed of fiberglass reinforced polymer. This model has a black finish.