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Installation of the Posi-Lock Bolt Latch For MKII & MKIII

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

Is your Ruger MKII or MKIII pistol's bolt not locking back after the last round? Our Posi-Lock Bolt Latch is designed to withstand even the most demanding shooter. Manufactured from hardened A2 tool steel this latch contacts the bolt in a more effective way in order to ensure the bolt locks open on each and every empty magazine. It's important to note, our Posi-Lock Bolt Latch is not compatible with the 22/45 models.

Tools Needed

  • Hex Key (Allen wrench) or Screwdriver
  • 1/8" Punch
  • 1/16" Punch

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