Pearce Grip Extention for Glock Gen4 9/40

PEARCE GEN 4 GLOCK PISTOL MAGAZINE EXTENSION

•For use on Generation 4 sub-compact mid-size & full-size high capacity full metal lined For Glock® mags.   •NOTE: Will NOT fit 10mm or .45 ACP model pistols   •Increases 9mm by +2 .40 S&W & .357 Sig. by +2 & .45 GAP by +1