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Posted: 1/30/2005 7:02:43 PM EDT
| I know this has probably been discussed, but, here we go again. I have an M4 cut Colt barrel, that I am doing a bastard build with. I want to use a RRA A4 upper, but since they are not M4 cut, will I have any problems with feeding? |
No. Read here for all the details and great pics. |
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