Originally Posted By 1saxman:
Neither one - they're both obselete carbine-length gas systems. I can't believe anybody is still buying short-handguard carbines now that the mid-length is out. If you must have a Colt, I guess the 6940. I would have ADCO cut the barrel back and weld on the flash hider to make a 16" barrel - at least it wouldn't look as ridiculous with all that barrel out in front of the short handguard. But, you can't do anything about that short sight radius - you're stuck with that.
I like mids over carbine gas system myself, but I think you are being a little dramatic.