Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 4-5 9mm .40S&W .357SIG Glock Serrated Gold

Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 4-5 9mm .40S&W .357SIG Glock Serrated Gold. It is designed to fit in most holsters and will fit Gen 4-5 Glock models in 9mm .40 S&W .357 Sig. Included with the magazine release is our stainless steel mag catch spring available in the stock 5lb or reduced 2.5lb weight. The reduced 2.5lb spring cuts the weight in half for quicker mag drops and less resistance during magazine swaps. Note: Will NOT fit G42 G43 or Gen 1-3 pistols.