Glock 11 coil spring for M/22, 31, 35 & 45 G.A.P. High cap mags only. Also fits M/17 & 19 19 Rd Mags - High cap with a GLO-7151. Part number 34 on the Glock Schematic.
The GLO-1300 G21,21SF 10 coil wide base magazine spring is intended for use with the 1304 or 1304-3 follower only. Not intended for use with old style NFML magazines. Part number 34 on the Glock...