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Posted: 9/24/2004 4:57:51 PM EDT
I have a "pre-ban" Colt, blue label. Of course I bought the gun about 3 years ago when nobody could imagine the AWB going away. This rifle has the A2 upper on it. I never really liked, prefer the flat tops, but I wanted the gun so I could put any configuration pre-ban upper on it. This rifle has the A2 flash suppressor but no bayoney lug. It's a 20" gun.

Anyway, I want to put a RRA A4 flatop receiver on it. I also want to switch out the FSB to one that has the lug. Will I have any problems putting the Colt barrel in the RRA upper receiver? I just want to make sure everything will fit together before I buy a bunch of parts. I have already ordered all the tools I need, receiver block, barrel wrench etc.... Thanks for any info.

Link Posted: 9/24/2004 5:03:19 PM EDT
Is it a large front takedown pin type?

Link Posted: 9/24/2004 6:07:33 PM EDT
No, small hole.
Link Posted: 9/24/2004 6:24:05 PM EDT
[Last Edit: 9/24/2004 6:26:33 PM EDT by Minuteman419]

Originally Posted By gaspipes:
No, small hole.

The sky should be your limit, my Blue Label as well as my Green Label has always required adapters for the small pin uppers. Which all worked, I just had to be careful not to force them together without giving some attention to working the front adapter pin a bit.

RRA did work for me. I just put a Colt barrel on a LMT upper, worked fine if that helps any.

Link Posted: 9/25/2004 6:44:34 AM EDT
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