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I just finished installing a Matrix Metal Body (www.evike.com/product_info.php?cPath=25_...mp;products_id=28636) my Mk12 DMR build. I want to buy a bunch of midcaps to go in it. I have 5 Beta Project PMags right now, and they fit and feed fine. However, when I tried the JG High-Cap I have, it wouldn't fit into the magwell. I am thinking about getting these Elite Force Midcaps www.evike.com/product_info.php?cPath=25_...p;products_id=28636. Does anyone know if they fit into the Matrix Metal bodies? Any help would be appreciated!

link to mags is wrong. You put the link to the receiver twice.

I'm really sorry about that. The ACTUAL link to the mags: www.evike.com/product_info.php?cPath=23_...p;products_id=39409. I promise im normally not that careless with my posts.

Hmmm... What doesn't fit with the mag? Is it too wide, or does it just not seat, as in click into place?

It will not go more than halfway into the magwell. I think the back (spine) of the mag is catching. I may just need to file down the spine of the mag, but I am nervous about breaking the mag. (I am aware that it is a cheap JG high-cap, so breaking it shouldn't be that big of a deal)