February 6th, 2013, 06:17 AM
MGySgt USMC (ret)
A Tale of Two Trigger Jobs
I guess I should apologize to Mr. Dickens for the indirect rip off of the title of one of his famous books. Grin.
OK, I ran into two things on two different trigger jobs this past weekend that I thought would be interesting for folks on this forum.
The first one was a GI trigger mech and parts and they are USUALLY no problem and preferred to use. However, the tension or lock up on the trigger guard was so frigging much it would have probably been too much even for Marine Corps NM Armorers. Grin. Anyway, I mention this because too much lockup or even close to too much lock up MAY cause too much streass on the trigger mechanism to allow a really good trigger job. Since this rifle has SO MUCH lock up, I could not get it to 4 3/4 lbs with a good "feel." I got weight off and made the trigger feel better, but I could not get the feel I wanted. Probably have to reglass the trigger housing in that rifle to have a little less lock up tension to get a really good feeling trigger on it.
This is one of a few reasons why I HAVE to have the complete rifle when doing a trigger job BECAUSE he lock up tension of the trigger guard WILL affect the final trigger pull weight and feel.
OK, the second trigger job was on an SAInc. SOCCOM rifle made about 5 years ago. The trigger geometry was WAY OFF spec so I replaced it with a Garand trigger and sear assembly. I TRIED to put a full length hammer spring in the trigger mech,BUT the geometry of the SAInc. made trigger housing was such that the pin holes were off enough that a full length hammer spring would not fit and work. The hammer spring in the Trigger Mech was as long as it would allow. However, once I replaced the SAInc. trigger and sear assembly and did the work, that trigger pull was down to weight and felt VERY good.
Some to many smiths may not run into things like this very often, so I thought I would post it and give folks something to use when they do run into these things.