AR Sponsor
Posted: 2/17/2007 6:40:57 AM EDT
| A friend of mine gave me his AR to troubleshoot. He built the rifle about 10 years ago and never could get more than about 5 rounds of without the gun seizing up. His term, not mine. Upon inspection, I found a lot of oil residue in the BCG. The bolt itself appeard to have an uneven glaze on it that scraped off brown. Suspecting baked on lube, I wire brushed in a dremel it off. The surface of the bolt is very uneven. I don't mean rough texture, more like high and low spots. It also looks like it might be cast. Please advise. |
|
I've got an old, re-finished Colt carrier that was obviously pretty heavily pitted before it was re-parked. It still works fine though as only a very few parts of the carrier contact the receiver. Edit* I just noticed you said the bolt itself is rough. I'd bet that's your problem. I've never seen a bolt as rough as you describe and it does have a lot of bearing surfaces. |
AR Sponsor