I have been researching these magazines for about two months now. I have yet to hear any thing bad about them except some think they are ugly. I never heard any one complain about fit in mil-spec receivers, or any problems with loading or feeding problems. Haven't seen or heard of a damaged or inoperable magazines. So I bought about 250 47/74 tulas and izhmash russian mags, yea two hundred and fifty. Most comments I find are from people that have never used one, but know something about them. As for appearance most like the looks. I have ordered some paints that are suppose to stick to AG-4S