Lower Folding Stock Adapter for BRN-180 Upper


I’m thinking on getting the new BRN-180 upper from Brownells. I have a lower picked out but want to go with the folding stock idea. All the folding stock adapter I’ve found are for pass thru buffers for regular AR type receiver buffer springs. I’m going to use a collapsible stock. Just looking for ideas if anyone has any. Thanks



This is why I love the SIG Sauer MCX lower… solves the problem very well.


Black Collar Arms (that’s me) is working on a rail mounted side folder for the BRN 180 and the Sig rifles. The Sig stocks are ok but they have no adjustment for creek rise

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