When I ordered this product, I was expecting exactly what the picture shows, a coupler for standard steel mags. What I got does not fit! On the back of most steel mags there is a large seam. The coupler in the pic shows a place for it to fit. The ones I recieved don't have this, and don't fit my 2 steel mags without the tall seam either! I am guessing that the couplers I got were for polymer mags. My Romanian Ak only takes steel mags! I don't blame impactGuns for this, but I need to swap these for the $13 ones.