The Colt will come with a 4150 CMV barrel, the bolt and barrel will be MP and HP tested, it will have the M16 BCG instead of a semi auto BCG, barrel will be 1:7 twist instead of 1:9 twist, and maybe a few other dotted i's and crossed t's so that it can me marketed as meeting "mil-spec". You can add all this to your Stag for another $100, if it is important to you.
Honestly, if I was spending that money and could find one in stock, I would buy the Colt too. You can get that rail handguard from Stag and replace the handguards on the Colt and still be ahead.
Last edited by cyphertext; 03-02-2012 at 15:59..