[RunningOnMT]

After all is said and done about this subject, I have a question; Why? Why would a company manufacture an aftermarket magazine for a particular firearm that doesn't work? Surely some R&D went into producing these mags, why wouldn't they have realized there was a problem? Has anyone bothered to contact these companies to let them know their product doesn't work worth a damn?

I was a QC inspector for several mold manufacturers and on occasion we had to duplicate other products. With modern CNC processes exact reproductions of existing parts is easily achievable. So why would a company like Promag produce a magazine for a particular firearm that had a functional detail that didn't match the original? It just doesn't make sense to me.

Of course we know that all brands of the same product don't always perform the same, but it has been my experience that this usually has to do with parts failure due to materials used. Companies try to maximize profits by making parts of cheaper materials. These materials may fail during use and malfunction, but that doesn't appear to be the case in this instance, rather this seems to be an intentional variation of a critical design feature..

I apologize for going off on a tangent but thing like this really get my panties in a bunch.