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This 11coil mag spring is for use in standard capacity 17/22 models and will work with most plus 1 and 2 extensions
and 20lb variants
Part#: GL1
Designed for use with ISMI’s single flatwire spring replacement
Designed for use with MagPul and most mil-spec followers
2011 Magazine Spring 140MM Sig This 11coil mag spring isManufactured from Chrome Silicon alloy these springs are designed to take less initial set to enable a more stable load and increased service life. This 11coil spring is meant for use in STI SVI magazines up to 140mm.
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