you mentioned the M&P15T....here is my M&P15FT which is the same but has the fixed factory stock (not the stock pictured however, i switched mine out for an ACE) this model comes with quadrail handguard & folding MAGPUL battle sights from S&W. it also has the flat top receiver with full length upper rail for optics, forward assist, and dust cover. figure around $1100 out the door...
i added the EOTech XPS, Geissele SSA trigger, LED rail light, hogue grip, & Ace skeleton stock. this thing is SWEET!! i love it, dead nuts accurate already sighted in from S&W....this past weekend i was hitting empty shotgun shells setup at 50yds, standing up from my shoulder no less, and i am not an expert shooter by any means. i setup 10 shells and hit them all with 12 shots, the 2 misses being my so-so shooting ability i'm sure. but i am nothing but happy with this rifle. also, it has a 1:8 twist w/ 5R rifling so the barrel can handle a heavier bullet, like 62 or 77 grain, if you would like.
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i added the EOTech XPS, Geissele SSA trigger, LED rail light, hogue grip, & Ace skeleton stock. this thing is SWEET!! i love it, dead nuts accurate already sighted in from S&W....this past weekend i was hitting empty shotgun shells setup at 50yds, standing up from my shoulder no less, and i am not an expert shooter by any means. i setup 10 shells and hit them all with 12 shots, the 2 misses being my so-so shooting ability i'm sure. but i am nothing but happy with this rifle. also, it has a 1:8 twist w/ 5R rifling so the barrel can handle a heavier bullet, like 62 or 77 grain, if you would like.