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Posted: 10/1/2012 1:43:00 PM EDT
| I changed the springs. The trigger reset spring was shorter than the new one. So I assumed that was the problem. 30rds not one double fire. 2nd thirty it started up again. Now it's out of control. For every single fire, I get a double fire. LRB lower and upper. Should I replace the whole fire control group. If so, what's good without breaking the bank. |
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Doubling is often a problem of the disco not retaining the hammer as the trigger is either being held back,or the hammer released from the disco on as you are letting go of the trigger too soon before the trigger is almost all the way back forward at the rest position.
So, out the gate, confirm that the disco spring is installed correctly, is the correct spring, and the disco not binding in the rearward position. In the case of a standard single stage trigger, with the trigger untouched, pull the hammer back until the rear hammer hook, and the disco hook are as close to each other as possible. With the trigger untouched (at rest), you should have a free gap between the two in the .001 to .003 range. If you find the gap greater than this, the free gap can be corrected by removing metal off the front/bottom of the disc where the disco seats against the top/front of the trigger. Be correcting the free gap, it allows the disco a better/increased tension of the hammer to hold it until trigger reset, and with the gap smaller, the hammer is not released off the disco until the trigger is almost all the way forward back at rest (read help to resolve trigger finger bumping as well)... In the case of two stage trigger, same pretty much applies here as well, but items like over travel need to be addressed as well, since if you set the over travel too tight (none to speak of), the is also decreases the amount of holding tension that the disco can apply to the rear hammer hook to hold it back as well. So with all of this in mind, bring us up to speed on the trigger in play, the pin and channel sized of the trigger, and confirm that if you have a .154 trigger pin receiver, then you have a .154 FCG in play as well (not .170 colt size parts on .154 pins, with the slop between the pins to parts causing the problems). |
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