The Glock Gen4 dual captured recoil spring assembly is a factory replacement part for the Glock 21 pistol. The recoil spring assembly is constructed of stainless steel with chrome silicon springs. The Gen 4 recoil spring assemblies are designed to withstand 5,000 rounds before they should be replaced to maintain reliability. This assembly will not work with the Gen2 or Gen3.
Glock OEM parts and accessories are made with the same attention to detail and quality as the ultra-reliable pistols. From firing pins to trigger springs, nothing keeps your Glock running like OEM parts.
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