This spring is intended to be paired with a Solid Guide Rod, not the factory recoil assembly. The spring packaging may state “1911” but we assure you that they are compatible with the noted guide rod for the XD Service model.
Reduced Power Loads: 18 Pounds
Factory Level Loads: 20 Pounds
+P Loads: 22 & 24 Pounds
Note: We recommend that you change this spring every 1500 rounds when used with the XD Service model
Made by W.C. Wolff Company
Installation Guide: Slide the CLOSED end of the spring onto the Guide Rod!
WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to – www.P65Warnings.ca.gov