If your budget is to $1500, my choice would be Daniel defense M4. They have excellent QC. Completely mil-spec, and then some. Cold hammer forged barrels, and free float rails that are among the best available, IMO. Basically with the DD youre getting all the bells and whistles that you would have to buy aftermarket if you went with the Colt. Not dissing the Colt at all, it is an EXCELLENT weapon, but you're gonna want to put a rail on it, and other stuff. So I say just go with the DD and call it a day!
Glock 20SF Gen 3
Glock 27 NiB-X Gen 3
Glock 19 Gen 4
Spike's Tactical Enhanced CHF 16" Mid-Length M4
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