2011 STI/Staccato Full Size Mainspring Kit

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2011 STI/Staccato Fullsize Mainspring Kit

This mainspring kit is a replacement kit for your full sized 2011 firearms.  It can also be used as one of the components needed to complete the full size conversion from a shortened Staccato C2/VIP grip into a full sized Staccato P/XL/XC or STI grip.


Included with this kit is a 19lb mainspring, mainspring housing pin retainer, cap retainer pin, and mainspring cap.


All parts in this kit have been blued to maintain the metal finish.


*Colt 1911 Hammer Spring

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  • 5
    Just what I needed

    Posted by Corey on 27th Oct 2023

    Upgraded my C2 grip to a new full size grip and needed a full length mainspring. Extreme shooters offered this kit for less than others, but also ships it at a very fair and reasonable cost. It works perfectly. Thank you!

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