Glock issued an announcement about a voluntary recall or exchange program for the recoil spring assembly on all of Gen4 pistols sold before July 22, 2011. In the announcement sent out to Glock armorers, the company stated their product development team modified “various elements” of the recoil spring assemblies to “…ensure each pistol’s performance meets the company’s demanding standards.”
The Gen4 Glock 26 and 27 pistols are not part of this recoil spring recall.
[Be sure to read my full Glock 17 review here.]
The recoil spring assemblies can be replaced by the owner of the firearm, and the firearm does not need to be shipped back to Glock.
The replacement part is free, and the complete instructions on obtaining the new recoil spring assembly is located at the Glock site.
There are a variety of different Glock Gen 4 recoil spring assemblies in circulation. Glock provided the following graphic to help identify which part you need: