AR Sponsor
Posted: 4/2/2005 7:04:21 PM EDT
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Just purchased a 20" 1x7.75 Kriefer from Fulton Armory (having a heck of a sale FYI). I want to mount to a Colt upper to match my 6920 lower. Will I have any problems doing this? Are all Colt uppers M4 cutouts (antcipate this being an issue)? If so, which other upper would you recommend? Problems with chambering? Need a specific bolt? In short, what compatability issues should I look out for in trying to match a upper to a 6920 lower? Thanks for the replies. |
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