Brass Stacker ISMI Premium flat wire recoil spring for Glock 17 17L 20 20SF 21 21SF 22 24 31 34 35 37
Brass Stacker - ISMI Premium flat wire recoil spring for Glock 17 17L 20 20SF 21 21SF 22 24 31 34 35 37. Quality aftermarket replacement single stage recoil spring for Glock generation 1, 2 and 3 pistols. Made from certified aerospace specification chrome silicon alloy. Heat treated, shot peened and stress relieved after winding. ISMI recoil springs have a one year replacement warranty. Made in America. Free domestic shipping.