Ruger Ultimate Bullseye Upgrade, Part Two

We finish our Ruger Bullseye upgrade by completing the trigger job, internals, magazine, and grip.

by David Allen Dumeah

Last issue we completed a tear down of a Ruger Mark I or II pistol for Bullseye and started in on improving the trigger. We’ll finish that and wrap up our build.

Use of aftermarket sears and hammers can be a good way to improve a Ruger’s trigger but does not remove concerns regarding safe function. It is necessary to have the sear pulled into the hammer notch securely, removing all internal tolerances when the safety is engaged. Aftermarket match-grade parts generally have some sear movement when the trigger is pulled and it’s important that any movement be adjusted out. I have found that minimal movement here creates two levels of trigger pull. There is the original which is set by the hammer and sear during normal reset. The other is the secondary level – which can be dangerously light – set by the pull of the trigger with the safety engaged and moving the sear slightly away from full engagement of the hammer notch, creating an unpredictable trigger let off. This is totally unacceptable. Make sure when the safety is engaged it actually pulls the sear into the hammer notch firmly, removing all of the remaining tolerances of the fire control system.

The way to do this is to…
Read more in the December 2017 issue.

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