ROGER4314
Been Called "Flash" Since I Was A Kid!
I was bitten by the "black rifle" badly and over the years owned, a boat load of them. I bought a lot of that steel cased .223 ammo and found that some of the rifles ate that ammo all day long without a problem. Other rifles, barfed on it and refused to operate. There are many possibilities for the cause of these issues, but I never could PROVE why that was happening.
As to the 7.62x39 AR issues, whenever I saw an AR malfunction, the first step was to change the magazine. Before you trash the upper or re-barrel it, I'd suggest that you buy a few magazines from different manufacturers and try them, first. Being a 7.62x39, your choices are limited but that's where I'd start.
Good luck!
Flash
As to the 7.62x39 AR issues, whenever I saw an AR malfunction, the first step was to change the magazine. Before you trash the upper or re-barrel it, I'd suggest that you buy a few magazines from different manufacturers and try them, first. Being a 7.62x39, your choices are limited but that's where I'd start.
Good luck!
Flash