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He reported that he is getting no reaction by turning up the gas.On a piston gun, just up the gas.
That's why I suspect the Ruger piston system as the #1 component to sort out.
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He reported that he is getting no reaction by turning up the gas.On a piston gun, just up the gas.
Sounds like you on on the right track in the troubleshoot.Approx. 750 - ish
4:00 & weak.
Yes, it used to have a strong ejection pattern.
I'll be checking the piston system again tomorrow. I've never oiled that area as per instructions from Ruger. I've cleaned the piston and other parts with a dry rag. I'll see if there is some form of carbon build up inside the piston casing.
Very thorough cleaning in all areas. CLP primarily, then a light grease on the rails and oil where required. I'll oil it up more than usual, except for the piston area, and g
I haven't modified this AR's action in any way and it is as it was manufactured.
It shouldn't have this problem with all three green tip ammo you listed. That's all decent stuff.
And what @Cerberus Group asked...
And @ KKG there may be a couple smiths around qualified to diagnose an AR problem
Did the gas port get some gunk in it from cleaning the barrel and then get baked in there?
When I had a FAL I would blast out the hole with carb cleaner and run a paper clip through it.
I do the same with the SR-762.
It's been documented that some of those rifles had problems with "carrier tilt".Thank you all for your input here. It's been informative and helpful.
I attempted tear down the rifle Tuesday morning. At first, after releasing the pins, the weapon would not break open and I noticed that the BCG was not fully seated in the closed position. It took quite a rap to get it to slide forward enough so that I could open the firearm and remove the upper from the lower. Suffice to say it was not sliding freely as it was designed to do.
The BCG and the inside rails of the upper appear to be badly scored. I am wondering if the BCG was wobbling around for some reason or another. Further, it WILL NOT move backwards out of the upper. I tried everything I could think of, short of forcing it backwards with a small bar, and it is firmly stuck.
So I have stripped all the accessories off the rifle and will be shipping it to Ruger in the next day or so.
More on the malfunction later after the folks at Ruger have an opportunity to tear it down and inspect it.
Right now let's chalk it all up to Defecation Occurs.
OK, cool.Oh, by the way.....
DING! DING! DING! DING! We have a winner! DirectDrive was spot on with his prediction in post #21.
My question to you is why does this thread have to morph into that discussion? It's already a dead horse.
Maybe were not all as experienced as you?
Sounds like your piston had a factory defect, glad you got it worked out. So Ruger is like Glock an will take all non oem parts out evidently. Did they ship your fcg back to you?