The Hobbit Posted November 8, 2015 Share Posted November 8, 2015 I was not aware that ARs could be built in 10mm. I've been wanting to build a 300blk SBR, but now I might have to rethink that. Quote Link to comment Share on other sites More sharing options...
bfausett84 Posted November 8, 2015 Share Posted November 8, 2015 Olympic arms is one of two sources. Quote Link to comment Share on other sites More sharing options...
gshayd Posted November 8, 2015 Share Posted November 8, 2015 10mm SBR would be a beast. Quote Link to comment Share on other sites More sharing options...
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