Ruger Mark I®

Ruger MK I, II, III, and 22/45 Performance Pak - Springs Extra Power Recoil Spring Extra Power Firing Pin Spring Reduced Power Hammer Spring Reduced Power Trigger Spring Fit: Ruger Mark I, II, III, and 22/45 Upgrading your Ruger pistol with these...

Ruger Mark IV Pistol Trigger Shims These trigger shims fit Ruger Mark I, II, III, IV & 22/45 Pistols. They install on the Left Side of the Trigger, between the Trigger and the #AN37 Bolt Stop Assembly. Installing a Shim here will stop the Trigger...

Volquartsen Exact Edge Extractor- Replaces stamped sheet metal Ruger factory Mk I, II, Mk III, Mk IV, 10/22, and 10/22 Magnum extractor with a closer fitting, sharper edged, machined tool steel extractor for better function and reliability. - The Exact...

"Green Springs" Magazine Springs for Ruger® MK Series (3-PACK)Shot-peened spring offers longer life than factory springReduces failure-to-feed issuesReplaces old, broken mag springsUpgrade your Ruger® MK series magazines with aftermarket...