Base pads for Glock 31

A heavier base pad adds the mass that helps the magazine exit the G31 grip cleanly on release, and the right geometry closes the magwell funnel when a magwell is fitted. The G31 uses the G22 frame in .357 Sig, and its magazine uses similar dimensions to the G22 -- base pads for the G22 and G31 are generally compatible, though the calibre inside differs. Confirm compatibility on the individual product page before ordering.