Fits M/17,17L,20,21,21SF,22,24,31,34,35,37. Part number 26 on the Glock Schematic.
Reviews
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Slide lock spring
After hours of fighting with an aftermarket spring I put the pistol away for a year. Looked for a spring again and came accoss Glockparts.com found the spring I needed, I got 2! It took less than 30 seconds to install and worked perfectly. No more aftermarket for me!