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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29
For use in model 20 and 21 pistols
Post winding processing consisting of heat treat/stress relieve
Extra power springs wound from aerospace spec chrome silicon wire
****Springs available in 15 and 17lb variants
This 11coil spring is meant for use in STI/SVI magazines up to 140mm
2011 Magazine Spring 170mm Sig For use in model 20Manufactured from Chrome Silicon alloy these springs are designed to take less initial set to enable a more stable load and increased service life. This 13coil spring is meant for use in STI SVI magazines up to 170mm.
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