My 2 cents? Instead of doing the same thing everyone else does, by buying a cookie cutter AR, then spending the next 3 years taking parts off and changing them constantly only to wind up with a closet full of old AR parts that you cant resell...Skip all that crap. Send a letter off to
Alberta Tactical Rifle and get one of their milled lowers with a 2 stage trigger, the flared Magwell and cross hatched front, Have them match up a well fitting upper, build the upper with a quality bolt/carrier and a stainless bull barrel...seriously, has anyone ever bolted on grenade launcher to their M4? or a Bayonet? Screw that, bull barrel accuracy with a target grade barrel. They can build it with a nice free floating top end and all the magpull do dadds you'll wind up buying anyway. You'll show up at the range and people will drool and you'll still have a closet left over for your shoes and gunsafe...and you can say you supported a Canadian Company and kept a few really good guys employed. An extra buck spent today will save you five over the next 3 years of rebuilding.