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Posted: 6/16/2007 5:33:29 AM EDT
| Can anybody give me some input why sometimes my gun will shot two times with one trigger pull ?? |
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Depending on the life span of the FCG parts, it could be as complex as the springs/parts/sears beyond their service life, to a simple as the disco just being out of tune. Also, in regards to the way in which you are shooting, if this problem only happens at the bench, you bumping the rifle could also be coming into play. Bottom line is a lot more information is needed to even begin to address the problem, much less come up with a solution to it. |
Slam fire is the FP alone igniting the primer at lock up. Unless he has primers that are seated above the case rim base, ammo being loaded with really soft pistol primers, or a broken FP, this will not happen on the weapon. If you mean hammer release at lock up (dancing off the disco or not being retained), than this leads back to the disco problems that I stated in my first post, and would not be a slam fire.  |
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Probably because you are releasing the trigger as it fires, rather than pulling it all the way to the rear and holding it. You are creating a condition where the disconnector just barely grabs the hammer, and the shock of firing and autoloading the next round bounces the hammer off the disconnector. Most likely it is you. BUT if you try shooting, and concentrating on holding the trigger back, and it still happens, it may be a mechanical problem. Here's how to test... (NOTE - Do this with the upper on the lower OR place a piece of rubber or plastic in front of the hammer so that the hammer does not strike the front wall of the receiver's FCG well. That can damage the receiver or bolt catch. A strip of rubber from an old rubber boot, etc, will suffice) With the rifle empty, no magazine, hammer cocked, muzzle pointed in a safe direction, pull the trigger and hold it. While continuing to hold the trigger, pull and release the charging handle. Now the hammer is being held back by the disconnector. Slowly release the trigger. You will feel when the hammer will "clunk" forward, jumping off the disconnector and onto the the trigger. There should have been quite a bit of trigger movement before the disconnector released the hammer. If the hammer released to the trigger soon after beginning to release the hammer, the timing is off. This can be caused by hammer, trigger, or disconnector being worn or out of spec, or the pin holes in the receiver not drilled exactly where they should. Or it may be a combination of all of the above. You might try increasing the disconnector engagement slightly. Grind a little bit of metal off the disconnector where shown.  Grind off only a tiny bit, then clean up the disconnector, reassemble, and retest timing as above. If you grind off too much, the disconnector won't let go of the hammer. |
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