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Stag Arms AR-15 - failure to extract
Nate
Member Posts: 168 ✭✭✭
Gentleman,
My father bought a Stag Arms Model 4L. He is having problems with the rifle, he asked me to take a look at it for him. I shot 20 rounds of white box winchester 5.56 through it. Of those 20 rounds, I got 18 failure to extract and 2 that extracted but did not load the next round into the chamber. I used two different magazines, one that came with the gun, and the other from my AR that I have not had any previous issues with.
Any ideas?
Thanks in advance
Nate
Edit 1
When you pulled the trigger the gun would fire. But then you had to manualy cycle the action to load a second round. The spent brass would still be in the chamber (18 times), the other two, you would just dry fire onto an empty chamber, the brass would eject but a new round would not load from the magazine.
Edit 2
Yes the gun was new in box. I do not know how much he shot it before I looked at it. But I would say less than 20 rounds. I know he cleaned it before he shot it and yes the chamber was cleaned.
My father bought a Stag Arms Model 4L. He is having problems with the rifle, he asked me to take a look at it for him. I shot 20 rounds of white box winchester 5.56 through it. Of those 20 rounds, I got 18 failure to extract and 2 that extracted but did not load the next round into the chamber. I used two different magazines, one that came with the gun, and the other from my AR that I have not had any previous issues with.
Any ideas?
Thanks in advance
Nate
Edit 1
When you pulled the trigger the gun would fire. But then you had to manualy cycle the action to load a second round. The spent brass would still be in the chamber (18 times), the other two, you would just dry fire onto an empty chamber, the brass would eject but a new round would not load from the magazine.
Edit 2
Yes the gun was new in box. I do not know how much he shot it before I looked at it. But I would say less than 20 rounds. I know he cleaned it before he shot it and yes the chamber was cleaned.
Comments
Does the bolt try to cycle after firing? I would look at the extractor if it does, if not perhaps the gas tube is pluged, the port in bore is pluged. Maybe a missing or broken piece on bolt. Did smoke/gas come out of handguards or ejection port areas? Does it have a selector knob for adjusting the gas system? I just guessing as I don't this rifle.
Did your dad buy a complete cleaning outfit INCLUDING A CHAMBER BRUSH, as sold in Brownells?
Neal
If he bought it used, clean the hell out of it. Clean the bolt really well, clean the chamber, as well as the gas tube it could be clogged.
However, when my DPMS was new it would often short stroke with the cheaper and hence underloaded ammo for the first 100 rounds or so. When it loosened up, it ate everything.
Dirty or rough chamber.
Bad extractor, missing or broken spring.
Gas system problem, obstructed tube, misaligned/ missing/broken piston rings.
Can yu borrow someone's spare bolt (everyone serious with these things had one), would eliminate about half the possibilities.
Thank you very much for your help.