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Posted: 4/9/2003 8:48:38 AM EDT
| I know this has been a topic before but I need some updated info. I went through 100 rounds and had 4 double shots. Is this a cleaning issue or should I replace springs???? I'm using military rounds. |
| by double shots i assume you mean you press the trigger once and two rounds are discharged. if that is the case you have some worn or severely off spec parts. do not shoot the gun anymore. replace the trigger group (if you know how) or send it to a good gun smith. |
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Arattack, All is not lost, and you don't need to break out the checkbook. First off, when you clean the rifle, make sure that you pull the bolt apart (leave the key and ejector on the carrier/bolt) and clean all the parts. If the firing pin gets heavily fouled, then it can stick out and cause ignition on bolt closer. Also, remember to clean the FCG (still in the rifle). It helps if you push back on the disconnect hook and use a Q-tip to clean any fouling that may be collected on top of the trigger and below the disconnector front foot where it rests on top/front of the trigger. That being said, and that it's problem not the problem, lets get down to repairing the rifle. With the rifle unloaded!!!!!!! Start off by holding the trigger back and pulling back on the charging handle, then get the bolt locked back without releasing the trigger. With the charging handle locked back forward, and the trigger still held back, hit the bolt release and let the carrier fly forward and lock closed. Now let go of the trigger and pull it again. The hammer should fall. If it doesn't, then when the carrier slammed home, the impact made the disconnector release the hammer. Second test, hold the trigger back again, and charge the weapon, this time just hold the trigger and let the carry handle snap home. Now very, very slowly, release the trigger (do this a few times). You should feel the hammer release off the disconnector and the fall to the trigger. By pulling the trigger after the slow release, the hammer should fall and strike the firing pin. Also, during the slow release, the hammer should be released from the disconnector and set to the trigger at the very end of the trigger stroke; just before the trigger comes back to rest. Run these function test and let us know how it turns out. If the rifle fails either of these, then we will instruct you on how to tune the disconnector to retain the hammer from slipping and holding the hammer longer on the trigger release. Dano |
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Dano, When I pull the trigger prior to charging the bolt and hold it, then charging the bolt, and release the trigger the hammer releases on the release of the trigger. I've ordered new trigger springs and am in the process of stripping the entire rifle to clean every part. |
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Arattack, First off, you don't need to change any of the springs. The only spring that I want you to check out is the disconnector spring. The spring should be installed with the large side down into the trigger back slot. If the spring is mounted large side up, then it could be causing the problem. Also, since you will have the disconnector out of the rifle, we may as well tune it to the rifle to solve the early release of the hammer on trigger reset. On the disconnector front foot, where it contacts the front/top of the trigger, scribe a line of .030 off the bottom edge (from the tip, back to the just short of the pivot pin). Now carefully, remove the metal from the front/bottom foot of the disconnector. If you have a vise, then chuck up the disconnector at the scribe line and draw file the metal off. What this does is allows the disconnector to cam forward. This allows the disconnector to retain the hammer better and longer as the trigger is resetting. After you have trimmed the foot, put the disconnector back in the rifle and re-test. Again, the hammer should be released from the disconnector and retained by the trigger as the hammer just comes back to rest. If disconnector is still being released a little to soon, then remove a little more metal off the disconnector front/bottom foot. Basically, you want a .002-.004 gap between the hammer disconnector hook/sear and the hammer disconnector sear when the trigger is at rest. You can pull back on the hammer and look to see what the current gap is at regarding the relationship of the two. P.S. Chances are that someone tried to do a trigger job on the hammer/trigger sear, and when they shorten the hammer sear edge, they didn't retime the disconnector to allow the trigger sear to get under the hammer sear at disconnector release. This is why when you slowly release the trigger; the hammer just slips by the hammer sear and fires the rifle. |
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I had a similar problem. The pin that hold the trigger in place would start to walk out the side of the receiver. I did not have one spring installed correctly and when I corrected this. All was well. Thanks to this message board, I was able to correct it. Check and see if your lower is assembled properly. [usa] |
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