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Site News Could You Have Stopped This? Vegas Shooting Analysis with Attorneys on Retainer
11/22/2008 5:40:30 PM EDT
Does anyone use Colt lowers with variant caliber uppers?  I have never seen/heard of one (and did a search).  I'm interested in a 6.8 upper for my 6520.  Will it work?
11/23/2008 8:50:01 AM EDT
[#1]
Yes it will work fine.
Colt is the original mil spec AR15.

11/23/2008 9:07:20 AM EDT
[#2]
Quoted:
Yes it will work fine.
Colt is the original mil spec AR15.



Which is why it has Mil-spec FCG pins right?


11/23/2008 1:57:53 PM EDT
[#3]
wow  you never miss a chance to troll in a colt related thread do  you?

I bet the commercial buffer tubes that are bigger are OK though right?
11/23/2008 6:43:35 PM EDT
[#4]
Quoted:
Yes it will work fine.
Colt is the original mil spec AR15.



That's what I thought.  I'm just interested in picking up another upper, and got to over-thinking it and realized that I had never seen a "Brand xyz" upper on a Colt lower (or vice-versa).  I did read about pin size differences, but didn't find any other obstacles.  Hopefully, I'll be able to pick up a nice flat-top upper, probably in 6.8, for some night vision stuff - it would look funny on a carry handle.

Thanks


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