I've got a yugo sks that I love to shoot and has never given me any problems. I bought it from a buddy for 75 buck about 6 or 7 years ago.
I've attempted to use the detachable mags and have come to the conclusion they are junk, I wasted my money buying 4 different mags and not a one of them worked worth a damn. No more, ill just use stripper clips with the original built in box mag.
Century Arms AR-15A2, 5.56
1946 Mosin-Nagant M44, 7.62x54R
1978 YUGO SKS, 7.62x39
NEF Protector Pump, 12 gauge
Savage Model 64, .22LR
NEF Pardner Tracker II, 12 gauge
Rock Island Armory 1911A1, .45 ACP
Remington 870 'Express Magnum' 12 gauge
Bersa Thunder .380