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Posted: 11/23/2008 7:23:43 AM EDT
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I have a RRA lower and saw on this site it is not mil-spec
Other than RRA what uppers will fit it? Thank you for any information. Bill |
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Quoted:
Quoted:
I have a RRA lower and saw on this site it is not mil-spec Other than RRA what uppers will fit it? Thank you for any information. Bill All of them except some of Colt's commercial uppers with the big pins. And even the early Colt uppers can be sleeved w/a $20 part that reduces the hole size. 
And of course the Rock River lower (and EVERY OTHER civilian lower) isn't milspec. If it was, it would be milled and drilled for the full auto sear. And that wouldmake it totally illegal for civilian sales. 
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