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4/12/2005 11:22:57 AM EDT
I have a 6400c Colt I'm thinking of converting to 9mm and be able to convert it back. If I change the hammer to a DPMS will it work with an RRA upper and the Colt upper? Other than a magwell block will I need to change anything? What would be the best magwell block for this setup? Thanks for your time and input.
4/12/2005 6:43:09 PM EDT
[#1]
Check out the 9mm FAQ.  It should answer your questions about the hammer and give you a break down on the types of blocks out there.

www.ar15.com/forums/topic.html?b=3&f=15&t=108261
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