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5/22/2007 11:16:09 AM EDT
Hello, I have got a Colt sporter with a 16" barrel.
I want to put a flat top upper receiver.
Which one can I install, where can I find it ?
Thank you
5/22/2007 6:53:05 PM EDT
[#1]
Any receiver advertised as milspec should work.  I'd go with a CMT from Denny's Guns or an RRA from ADCO, to name a couple of sources..

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