The Pearce Grip Extension is specifically designed for Shield Arms 15-round magazines compatible with GLOCK 43X/48 pistols adding 1/2 inch of grip length for enhanced comfort and control.Pearce Grip Extension for Shield Arms magazinesCompatible with GLOCK 43X/48 Shield Arms 15-round magazinesAdds 1/2 inch more grip length to factory magazineHigh impact polymer constructionIncreased comfort and controlDoes not alter magazine capacityReplaces magazine floor platePerfect for shooters seeking improved ergonomics and better grip control without sacrificing magazine capacity or reliability.