Tacoma1988 Posted December 23, 2016 Report Share Posted December 23, 2016 I've built a few ar15s and just built my first ar10. I have not fired it yet but have noticed that when I cock the bolt, it does not engage the trigger. If i cock the bolt then flip the safety on and flip it back to fire it does engage the trigger. What could my issue be? I've never had this problem with a regular ar15. Quote Link to comment Share on other sites More sharing options...
shepp Posted December 23, 2016 Report Share Posted December 23, 2016 55 minutes ago, Tacoma1988 said: I've built a few ar15s and just built my first ar10. I have not fired it yet but have noticed that when I cock the bolt, it does not engage the trigger. If i cock the bolt then flip the safety on and flip it back to fire it does engage the trigger. What could my issue be? I've never had this problem with a regular ar15. Welcome to the forum feel free to tell us about yourself im going to move this to the general section. Some things people will probably wanna know, what kinda trigger, brands? Probably lower brand maybe some other things? Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted December 23, 2016 Report Share Posted December 23, 2016 Welcome from Iowa! First what exact name brand did you build? Not sure I follow what you mean by engaging the trigger? Is the bolt locked back or are you cycling the action? Watch this video and see what yours is doing differently; Quote Link to comment Share on other sites More sharing options...
Tacoma1988 Posted December 23, 2016 Author Report Share Posted December 23, 2016 The lower receiver and parts kit are both standard palmetto state. When I pull back the charging handle it cocks the bolt correctly but I can't pull the trigger. Once I flip the safety on and flip it back to fire the trigger will pull. It does it without the upper receiver on it as well so I don't think my issue is in the upper Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted December 23, 2016 Report Share Posted December 23, 2016 Which generation PA10 is it? What trigger, PSA parts kit trigger? Might be handy to post a few pictures of the trigger at the different stages. Quote Link to comment Share on other sites More sharing options...
Tony b Posted December 23, 2016 Report Share Posted December 23, 2016 I had a similar issue with a aero lower and and upper, and aero lower parts kit. I had to turn the safety on then off to get the trigger to reset. I ended up getting a drop in trigger to fix that problem. Quote Link to comment Share on other sites More sharing options...
Tacoma1988 Posted December 23, 2016 Author Report Share Posted December 23, 2016 Yep that's my issue! I haven't fired it to see if it cycles properly yet! I didn't want to do anything that may cause a catastrophic failure even though I don't think it would. Quote Link to comment Share on other sites More sharing options...
Tony b Posted December 23, 2016 Report Share Posted December 23, 2016 My friend wash guy assured me that the trigger reset problem was due to improper assembly of the trigger with the safety. I just bought a drop in trigger and it fixed it so maybe try reasssemblung the safety and trigger. Quote Link to comment Share on other sites More sharing options...
Tacoma1988 Posted December 23, 2016 Author Report Share Posted December 23, 2016 I've done that teice already and I've done it correctly and it still does it. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted December 23, 2016 Report Share Posted December 23, 2016 Remove the Safety & see if the Hammer cocks or locks back into firing position . Of course do not fire the Rifle with out it , but testing with out ammo on the bench , as you have been doing . I have had to alter Safeties for them to let the Trigger move far enough down to engage the Hammer sear. Could also be interference with the Hammer & Disconnector , keeping the Hammer Sear from engaging . You would see a Mark on top of the Disconnector where it is interfering with Hammer travel . PA 10's have been on here with many issues , they don't play well with other manufacturers components & sometimes with their own . They are a DPMS type Receiver system , not AR 10 ,which is made by Armalite & the two types, DPMS /AR 10 have differences & we separate the two because of some Proprietary components between the two types. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted December 24, 2016 Report Share Posted December 24, 2016 3 hours ago, survivalshop said: Could also be interference with the Hammer & Disconnector , keeping the Hammer Sear from engaging . You would see a Mark on top of the Disconnector where it is interfering with Hammer travel I'm leaning towards this, before even reading your post. I'll bet it's a disconnector issue. Which is a trigger group issue. And a Palmetto issue. Quote Link to comment Share on other sites More sharing options...
mrmackc Posted December 24, 2016 Report Share Posted December 24, 2016 6 hours ago, Tacoma1988 said: The lower receiver and parts kit are both standard palmetto state. When I pull back the charging handle it cocks the bolt correctly but I can't pull the trigger. Once I flip the safety on and flip it back to fire the trigger will pull. It does it without the upper receiver on it as well so I don't think my issue is in the upper Somewhere I have seen instructions that came with an aftermarket LR308 trigger that told how to modify a safety shaft that interfered with the disconnector. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted December 24, 2016 Report Share Posted December 24, 2016 10 hours ago, mrmackc said: Somewhere I have seen instructions that came with an aftermarket LR308 trigger that told how to modify a safety shaft that interfered with the disconnector. If the Barrel or Shaft of the Safety fits into the Hole for it , there is nothing wrong with it , its a FCG Pin hole issue or the Safeties Hole, not in their proper configuration , which can cause that issue . There are some Triggers out there , including Geissele ( G2S ) That need some modification to them to proper function in some DPMS type Rifles . The issue is explained with photo's in the Trigger Section , G2S Thread .The issue will also cause the Hammer not to engage the Triggers Sear , because of interference with the Disconnector. I know because I have had it & contacted Geissele & they had a easy fix , that took an angle on the back of the Hammer surface another 15 deg. & I did it with a File. Only effects some DPMS rifles . & just to get the proper clarification on what interferes with what , the Safety can interfere with the Trigger & effect other components of the FCG . The Trigger is the only component that the Safety interacts with & has actual contact with , but as was said , can cause issues elsewhere . Quote Link to comment Share on other sites More sharing options...
Tacoma1988 Posted December 24, 2016 Author Report Share Posted December 24, 2016 Yeah I know I'm not having a safety issue. It still does it with the safety totally removed. Quote Link to comment Share on other sites More sharing options...
mrmackc Posted December 24, 2016 Report Share Posted December 24, 2016 52 minutes ago, survivalshop said: If the Barrel or Shaft of the Safety fits into the Hole for it , there is nothing wrong with it , its a FCG Pin hole issue or the Safeties Hole, not in their proper configuration , which can cause that issue . There are some Triggers out there , including Geissele ( G2S ) That need some modification to them to proper function in some DPMS type Rifles . The issue is explained with photo's in the Trigger Section , G2S Thread .The issue will also cause the Hammer not to engage the Triggers Sear , because of interference with the Disconnector. I know because I have had it & contacted Geissele & they had a easy fix , that took an angle on the back of the Hammer surface another 15 deg. & I did it with a File. Only effects some DPMS rifles . & just to get the proper clarification on what interferes with what , the Safety can interfere with the Trigger & effect other components of the FCG . The Trigger is the only component that the Safety interacts with & has actual contact with , but as was said , can cause issues elsewhere . SS you are right on, I had a brain fart, now I remember it was a mod. of the hammer. Quote Link to comment Share on other sites More sharing options...
Tony b Posted January 4, 2017 Report Share Posted January 4, 2017 Tacoma do you have an update on your trigger problem? inwas curious what the fix for that issue was? Quote Link to comment Share on other sites More sharing options...
Tacoma1988 Posted January 4, 2017 Author Report Share Posted January 4, 2017 Actually I did. I took apart a lower for one of my ar15s and saw that the trigger spring was installed forward facing like it should be. Installation video for the 308 I was using on YouTube was wrong and had it installed rear facing so it was putting back pressure on the trigger. I flipped it around and it works perfectly now! I let the guy who posted the video know he had it wrong. Quote Link to comment Share on other sites More sharing options...
Tony b Posted January 4, 2017 Report Share Posted January 4, 2017 i am glad to hear you got it fixed. I just put mine in a ar15 lower and it was the same thing we must have watched the same wrong video lol. Quote Link to comment Share on other sites More sharing options...
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