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Installation of Precision Frame Lug for the Ruger MK IV

Before We Begin


  • Always make sure the firearm is unloaded before performing any work it!
  • Remove all ammunition from the work area before working on any firearms.
  • Always wear safety glasses when performing any work on a firearm.

Video Instructions

The process for installing our Precision Frame Lug into your Ruger® MK IV™.

Tools Needed

  • 3/32" Allen wrench
  • Needle nose pliers


Step 1 - Remove Factory Lug

  • Make sure the firearm is unloaded and uncocked.
  • Separate the frame from the upper
  • Remove the screw at the front of the frame that retains the existing frame lug
  • Pull out the existing frame lug. You'll probably need to use a pliers to pull the lug out of 22/45 frames. Grab the lug and wiggle it to get it free.


Step 1 - Install Precision Frame Lug

  • Insert the Precision Frame Lug into the frame
  • Reinstall the screw you removed earlier to retain the frame lug. Be careful not to tighten it excessively, especially on 22/45 frames.

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