tanfoglio1911 Posted September 6, 2016 Share Posted September 6, 2016 (edited) Need help from someone who can explain me if what is wrong with the trigger system of my STI. During live fire, the trigger seems lock and or maybe did not reset after each shot that Im having difficulty pulling the trigger on my next round. When dri firing, this issue does not occur and it seems nothing wrong with the trigger system. Trigger is soft and you can feel the reset. I tried to adjust the over travel screw while having this issue but that did not fix the problem. Not sure if I need to replace the ignition component of this gun or if there is just a part that need to be replace. I can't tell how old this gun was or there is already a wear and tear in the component since I bought this gun used. Thanks for any help or advise. Edited September 6, 2016 by tanfoglio1911 Link to comment Share on other sites More sharing options...
Quack Posted September 6, 2016 Share Posted September 6, 2016 Have you detail stripped the gun? If so, are the fire control parts properly installed? Link to comment Share on other sites More sharing options...
tanfoglio1911 Posted September 6, 2016 Author Share Posted September 6, 2016 2 minutes ago, Quack said: Have you detail stripped the gun? If so, are the fire control parts properly installed? Yes, I detail strip and clean the gun. I was putting rounds when this happened unexpectedly. I shot about 200 rds when this occurred. Link to comment Share on other sites More sharing options...
72stick Posted September 6, 2016 Share Posted September 6, 2016 If the grip safety isn't pinned, are you sure the grip safety is fully depressed and releasing the trigger? Link to comment Share on other sites More sharing options...
tanfoglio1911 Posted September 6, 2016 Author Share Posted September 6, 2016 1 minute ago, 72stick said: If the grip safety isn't pinned, are you sure the grip safety is fully depressed and releasing the trigger? Yes the grip safety is pinned. Link to comment Share on other sites More sharing options...
dansedgli Posted September 6, 2016 Share Posted September 6, 2016 Take the grip safety off and see what is going on in there when it happens. If the trigger moves in and out but nothing happens the disconnector likely hasn't reset. Investigate why it isn't being pushed forward by the sear spring. Something may be catching or there isn't enough pressure on the middle leg of the sear spring. If the trigger is hard to pull/doesn't move the hammer may have fallen to half cock. If this happens you need to put more pressure on the left sear leg and/or have the sear and hammer engagement looked at. Link to comment Share on other sites More sharing options...
72stick Posted September 6, 2016 Share Posted September 6, 2016 Maybe try shooting it with the grip safety unpinned to see if it's pinned correctly and not dragging on the trigger? Link to comment Share on other sites More sharing options...
tanfoglio1911 Posted September 6, 2016 Author Share Posted September 6, 2016 Take the grip safety off and see what is going on in there when it happens. If the trigger moves in and out but nothing happens the disconnector likely hasn't reset. Investigate why it isn't being pushed forward by the sear spring. Something may be catching or there isn't enough pressure on the middle leg of the sear spring. If the trigger is hard to pull/doesn't move the hammer may have fallen to half cock. If this happens you need to put more pressure on the left sear leg and/or have the sear and hammer engagement looked at. I noticed this while playing with the hammer a while ago. While pulling the trigger and gently guiding the hammer to move forward, sometimes its stays at half cock and I cant pull the trigger. Do I need to push the left sear leg forward to add more pressure?Sent from my SAMSUNG-SM-N920A using Tapatalk Link to comment Share on other sites More sharing options...
dansedgli Posted September 6, 2016 Share Posted September 6, 2016 No that isn't the springs fault. Sounds like you dont have enough overtravel. You shouldn't be able to feel the hammer and sear rub when holding the trigger in and moving the hammer back and forth manually. Link to comment Share on other sites More sharing options...
tanfoglio1911 Posted September 6, 2016 Author Share Posted September 6, 2016 No that isn't the springs fault. Sounds like you dont have enough overtravel. You shouldn't be able to feel the hammer and sear rub when holding the trigger in and moving the hammer back and forth manually. Sorry that you misunderstood what I was trying to explain. As I was pulling the trigger, I was guiding the hammer to move forward to strike the firing pin but there were some part of the cycle that the hammer will stay half cock. I tried to switch the sear, sear spring and disconnector to my open gun and it has the same issue. Sent from my SAMSUNG-SM-N920A using Tapatalk Link to comment Share on other sites More sharing options...
Quack Posted September 6, 2016 Share Posted September 6, 2016 Sounds like not enough overtravel Link to comment Share on other sites More sharing options...
tanfoglio1911 Posted September 6, 2016 Author Share Posted September 6, 2016 10 hours ago, Quack said: Sounds like not enough overtravel I tried to adjust the overtravel when I first noticed the problem but it did not help. Thanks. Link to comment Share on other sites More sharing options...
kamikaze1a Posted September 7, 2016 Share Posted September 7, 2016 It could be trigger bow contacting an out of spec mag. Are you dry firing with no mag inserted? Link to comment Share on other sites More sharing options...
tanfoglio1911 Posted September 7, 2016 Author Share Posted September 7, 2016 5 minutes ago, kamikaze1a said: It could be trigger bow contacting an out of spec mag. Are you dry firing with no mag inserted? Yes I do a lot of dri fire w/o the mags Link to comment Share on other sites More sharing options...
Dr Mitch Posted September 7, 2016 Share Posted September 7, 2016 Trigger bow contacting magazine Link to comment Share on other sites More sharing options...
kamikaze1a Posted September 7, 2016 Share Posted September 7, 2016 (edited) 1 hour ago, tanfoglio1911 said: Yes I do a lot of dri fire w/o the mags That could be why your trigger functions while dry firing (no mag). Mark your mags and you may see that the problem is only with certain mags... Note the front to back dimensions, 1.360"... Edited September 7, 2016 by kamikaze1a Link to comment Share on other sites More sharing options...
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