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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.