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Posted: 3/20/2009 12:13:02 PM EDT
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Fellow Members,
I have a question on take-up on a stock "mil-spec" FCG. Is it possible to safely remove some of the take-up or sear enagement on a mil-spec trigger? I have experience with the 15 minute trigger process, I have a JARD trigger, and run a Geissele in one of my guns. So I can see how other after market triggers work around the situation. I have seen the setscrew mod to the receiver, but could not find whether that mod works with a mil-spec group. I do understand the relationships between the safety, disco, trigger and hammer. I also saw the post with the "clip" that attaches to the trigger guard, but looks like a piss poor way to approach things, not to mention that I suspect that device may not allow proper safety fit/engagement. I can see how I can do this adjustment, but I am uncertain about the amount of sear engagement that is necessary to keep a stock FCG safe. Thank you for any help, and I did spend a considerable amount of time in the archives looking for an answer. Craig |
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1/4 x28 x3/8" allen set screw,
Pistol grip screw shortened 1/2". Pistol grip off, selector detent in place, selector spring left in the pistol grip. With the selector set on safe (hammer has to be cocked back), and a small tool used to press up on the detent to seat the detent in the selector groove, Apply Blue loctite on the set screw and screw it up into the pistol grip threads from the bottom of the receiver. Tighten the set screw until the selector is a tad hard switching from safe to fire. In time, the selector will mate to the back of the trigger, and the selector will flick between the two setting with ease. This will remove the unneeded slop in the trigger from at rest position to the selector safe position. To remove more from here, you have to rework the hammer and disco sear, and it's not a job for the untrained. |
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Dano,
Thank you very much. Coming from you I now have a lot more confidence fiddling with it. I already have the set screw and reduced grip screw, as my spare Jard trigger uses this approach. I actually had thought of possibly relieving the top of the rear of the trigger to "adjust" the engagement with the selector, but it appears clear that you are saying that anything more is gonna screw with trigger/sear geometry, negatively. Understood, fully. My only problem now is that with my current LPK/FCG configuration, I actually have very little "play" in the trigger in "safe", so I am not sure how much of a gain I will get. But, I will proceed, to find out. Thank you very much, Craig |
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Just an update to agian thank Dano, and post some results for anyone who might be interested. I performed the mod, and it does remove a bit of the slack in the trigger. I had thought that the limited amount of play (before mod) in the takeup based soley on contact with the safety selector was pretty minimal, but this mod can definately be felt, for the better.
Thanks again, Craig |
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VB,
No pictures, but performed as described by Dano. If I were to take a picture what you would see would be the nose of the set screw sticking up from the grip screw hole perhaps a 1/16 of an inch or so into the lower receiver, where it bears on the bottom of the back of the trigger "bar". And this mod in no way causes any problems with routine removal of the FCG. Craig |
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