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  • Product Details

    Overall Length:3.052"
    Rod Diameter:.25"
    Guide Rod Material:Stainless Steel
    Reverse Plug Material and Finish:Blued Carbon Steel
    Recoil Spring Type:14lb Flat Wire Commander Spring for 9mm [ISMI Spring]

    This kit reduces recoil and increases longevity of the spring system in Springfield 4" guns.

    If you have a .45 ACP or .40 S&W you will need the kit with the 22lb flat wire spring available here.

    The kit includes a 1/4" guide rod, reverse plug and ISMI flat recoil spring.

    All systems use a 1/4" guide rod made from solid barstock with a take down hole.

    Reverse plugs are Blued carbon steel.

    Meant for use in Springfield 4'' 9mm 1911's only.

    This kit fits:
    EMP 4" Lightweight Champion 9mm
    EMP 4" Concealed Carry Contour 9mm
    Range Officer Compact 9mm
    Range Officer Champion 9mm
    Range Officer Elite Compact 9mm
    Range Officer Elite Champion 9mm

    All kits are drop-in.

    In independent testing, ISMI spring have endured in excess of 100,000 compression cycles. We don’t recommend going that long between changes however. With an ISMI spring, practice routine maintenance and change it once a year.

    Warning: This product may be alloyed with trace amounts of lead and other elements which are known to the State of California to cause reproductive harm and cancer. To prevent exposure, do not alter the product by welding, grinding, etc. For more information, go to
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    You're reviewing:Springfield 4" Guide Rod Kit 9mm (14# Commander Spring)