Too much play for attached stock - Midwest Industries Alpha Series M4 Beam Side Folder

The only problem with this setup is the amount of slop there is with the stock or brace you put on it. I'm trying different brands of stocks and I might be able to layer some tape on the top of the adapter arm to snug things up, but thats the only thing wrong and can be somewhat fixed if using a stock with an anti slop adjustment or retaining screw. Everything else is beautiful, 1913 mount is very solid once it's torqued to the picitinny rail.