117-184
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NOT FOR USE IN RUGER Mk III, Mk II or Mk I Pistols

What It Does
The Apex Action Enhancement Kit for the Ruger Mk IV 22/45 replaces the factory trigger and hammer and is designed to reduce the trigger pull weight by approximately 30% to around 4.5 lbs. The kit delivers a crisp trigger break while reducing the trigger’s over-travel by 50% and overall trigger travel 15%. Also included in the kit is a safety plate to maintain factory safety values, even when drop-tested from 6 feet. The red anodized magazine safety delete, which when installed, allows the pistol to fire without the magazine inserted. This is recommended for competition use only.

NOTE: Please be sure your Mk IV has been retrofitted with the updated safety mechanism or is a newly manufactured model with a serial number beginning with the number "5." Click here for Ruger's official Mk IV Recall information.



Expected Results
– Reduces trigger pull to approx. 4.5 lbs
– Reduces trigger over-travel approx. 50%
– Reduces
overall travel approx. 15%  
– Delivers crisp trigger break
– Maintains factory safety values


Applicable To What Gun(s)
Ruger Mk IV 22/45 models (with safety upgrade or post recall models).
NOT for use in the standard Mk IV pistols (see #117-154).
NOT recommended for use with other aftermarket fire control components.


In The Package
1 ea. Apex Action Enhancement Trigger for Mk IV 22/45 (Red Anodized)
1 ea. Apex Action Enhancement Hammer
1 ea. Apex Safety Plate
1 ea. Apex Magazine Safety Delete


Installation Resources