The Lone Wolf Distributing Stainless-Steel Guide Rod # GR2021 fits all G20, 20SF, 21, and 21SF Pistols. You are purchasing the guide rod ONLY; recoil spring is sold separately.

The guide rod can be used with the original factory recoil spring. If you intend to use a Wolff "round wound" recoil spring, you must install the special washer behind the screw tip. The factory recoil spring weight is 17 lbs. on all G20, 21, 21SF Pistols.

Lone Wolf stainless steel guide rods provide a decisive advantage for all Glock owners. Special features include a rigid stainless-steel body that improves lock up by completely removing "guide rod flex". The hex screw removable tip allows the user to choose various spring weights that will calibrate the ammunition to his gun. Used by Law Enforcement and competitive shooters worldwide, will not chip or crack like the factory plastic guide rods are prone to do. Will not damage or wear your polymer frame and guaranteed to provide a lifetime of reliable service.

Lone Wolf recommends the use of Blue Loctite on the hex screw threads and the rear cap to shaft screws. This will provide a firm hold and still allow easy removal when necessary. Allen wrench provided.

If you are using this guide rod on a Gen4 pistol the LWD-GR4Adapter (sold separately) is required.