Hey guys, a little newer on this forum, new-ish to ARs, 3 years of firearms experience.
I'm going crazy trying to pick out a gas block.
The story in a nutshell:
I bought my AR from a private seller, it was a DIY build. 18" free float, no name upper, no name lower, no name barrel, un-dimpled, fairly mil spec in general besides the diamondhead forend. I got it for $600.
about 500 rounds into it, I developed some FTF problems.
Intermittently : wouldn't strip a round, rounds would nose up and jam the bolt, and failure to LRBHO.
At first I thought it was weak budget brand tula ammo, So I tried others, and it was fine with Wolf .223 and brass.
Then the malfunctions came back. Friends checked it out, and swapped the upper out with a functioning rifle, which worked like a charm.
Eventually we noticed on my upper, there was fouling coming from around the gas block, i.e. gas escaping.
I removed forend, tightened the block against the undimpled barrel and blu loc tited. 300 rounds no problem. Then malfs returned.
Removed forend, REALLY tightened the block, and red loc tited. 400 rounds no problem. Even held up great for the 1st 3 gun match of the season.
After the match... problems returned. I am beside myself at this point. Friends are sick of hearing about my rifle.
I've heard dimple the barrel/don't dimple....
Get an adjustable gas block/don't get one
Clamp on adjustable?
Geiselle with bomb proof but non adjustable?
If geiselle then carbon steel/stainless/nitrided?
I saw a syrac non-adjustable on GB for $75 the other day....
I had a reputable gunsmith tell me adjustable doesn't make a difference unless its a piston AR, and that clamp on is most reliable.... and that he sells clamp on non-adjustables for $45 block plus tube.
what...the hell.... should I do?
Thanks for any input.