Hey folks so I went to swap out the DMR barrel from my upper that has a Midwest industries key mod rail and hey they use a proprietary barrel nut so my 2 AR tools don't work.
Anyone have one I could borrow or buy I want to install my 300blk barrel asap
Thanks in advance
Anyone have one I could borrow or buy I want to install my 300blk barrel asap
Thanks in advance


















































