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Old 04-10-2014, 12:17 PM
robkarrob robkarrob is offline
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VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER  
Join Date: Jun 2012
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Default VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER

I have spoke about modifying the stock "Mil-Spec" triggers, on other threads. I finally made a video, showing the results of my work, on my 15T trigger. Parts were $12, which were for the JP light springs, and a set screw to control trigger take-up. There is no comparison to the high dollar Geissele or Timney triggers, but it is much improved over the stock trigger. The rifle is safe, as the hammer will not slip off the sear, and the disconnector is timed properly. It has a very smooth pull and a crisp break at 2.5 pounds. I wanted it that light, but by changing springs, it could have been as high as 5.0 pounds. I have not had any lights hits, shooting a variety of .223 and 5.56 ammo.

Results:

1/8 inch of full trigger movement, from at rest to full travel stop.
1/16 inch take-up pull to break.
1/16 inch of over-travel, after break
3/32 inch trigger movement to reset.
2 pounds 8 ounces of trigger pull weight.

This is what I did:


Polished the sear and hammer engagement surfaces.
Installed a 1/4 long 1/4X28 set screw in the hand grip bore, to adjust take-up.
Installed JP light springs.
Ground metal from the upper rear of the trigger base, so the safety would fit back in.
Filed the disconnector to correct timing.
Light coat of anti-seize on the engagement surfaces.
Lots of assembly, disassembly, checking and testing.


Link to video: https://www.youtube.com/watch?v=Qv5KFSzF_cM


Bob

Last edited by robkarrob; 04-11-2014 at 12:05 AM.
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Old 04-10-2014, 12:20 PM
cyphertext cyphertext is offline
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VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER  
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Your video is private... can't watch it.
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Old 04-10-2014, 12:43 PM
robkarrob robkarrob is offline
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VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER  
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I hit public, but it did not take the first time. Went back and did it again, it should now be public.

Bob
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Old 04-10-2014, 01:01 PM
cyphertext cyphertext is offline
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VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER  
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Good now... Thanks!
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Old 04-11-2014, 04:02 PM
LiveorDie LiveorDie is offline
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VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER  
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It is hard to believe that the video is a milspec trigger. I did not know the trigger pull could be made to be that good. I am not that mechanical, and question if I would be able to undertake those changes to make my trigger like yours.
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Old 04-11-2014, 07:54 PM
robkarrob robkarrob is offline
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VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER VIDEO RESULTS OF MODS TO STOCK AR15 TRIGGER  
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I don't know your ability, but messing with the trigger mechanism, and the timing of the disconnector, takes some mechanical ability and knowledge. If you are not sure of you abilities, it would be best to get a gunsmith to work on the rifle. That way if he makes a mistake, he will have to fix it. Get an estimate and know exactly what the results will be. I have heard stories of smiths quoting a price, and then they came back and said it would be more, as they didn't fully understand what the customer wanted. The gun owner could have failed to fully explain what they wanted, but it could be the smith under quoted the job, knowing it would need more work, and cost the customer more. Ask around for recommendations to a good, honest smith.

Bob
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