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Posted: 2/7/2006 8:07:56 PM EDT
Im a bit confused. Whats the difference between a M4 upper and a Carbine upper?
Link Posted: 2/7/2006 9:13:17 PM EDT
barrel profile
Link Posted: 2/7/2006 9:37:13 PM EDT
[Last Edit: 2/7/2006 9:38:43 PM EDT by Dano523]
Link Posted: 2/8/2006 8:16:57 AM EDT
Thanks for the info guys.

So whats your recommendation? LMT M4 upper or other brand?
The upper will be going onto a Lauer lower.
Link Posted: 2/8/2006 8:52:29 AM EDT

Originally Posted By Dano523:
Add exstended feed ramps cuts to the barrel extension to work with the M-4 upper.

The M-4 is a Colt design improved carbine system. In regards to non-Colt copy barrels, the differences could also include chrome lining, and a tighter sidewall dimension chamber as well.



there are both options when you go with other brands. with or without extended feed ramps and there are also car profile bbl.s with the "extended feedramps".

both could be had with chrome lining or different chambers.
Link Posted: 2/8/2006 8:53:33 AM EDT

Originally Posted By Glockcoma:
Thanks for the info guys.

So whats your recommendation? LMT M4 upper or other brand?
The upper will be going onto a Lauer lower.




lmt makes good stuff.

there is also

sabre
stag
bushmaster
coltcmmg

the lower is just a lower
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