TandemKross Green Spring for Magazine Spring for Ruger Mark I, Mark II, Mark II 22/45, Mark III, Mark III 22/45, Mark IV, Mark IV 22/45 3PK

The TandemKross Green Spring Magazine Spring are perfect for upgrading your Ruger MK series magazines with aftermarket magazine springs. Magazine springs wear and tear over time, reducing the performance of your magazines and resulting in failure-to-feed issues. Don't let an under-performing or missing spring derail a shooting sports competition or day at the range! The new "Green Springs" for Ruger MK Series are shot-peened for a significantly longer life than the factory spring. The upgraded m