A variety of reduced power recoil springs to match your handloads and provide optimal slide function. Includes (1) 14 lb., (1) 15 lb., (1) 16 lb. and (1) 17 lb. reduced power recoil springs; and (3) extra power firing pin springs. Fits 9mm (.380) pistols. Factory standard recoil spring is 20 lb.
Big Book Catalog, Issue:66, Page:217
New Product Supplement, Issue:611, Page:013
Personal Protection, Issue:01, Page:018