I have a Mossberg 42M and your mag does not look like mine. I don’t want to dig it out of the safe right now, so I went through some pics I have of mine. The back of your mags have some type of double track that mine don’t have. My 42 mags have a single piece that runs down the center of the back. Just don’t believe your mags would fit my 42. I believe the mags for a Mossberg 152 are similar and have a track of sorts on the back of the mags, but don’t know exactly what they look like.