finally finished my AR build this week. as I mentioned earlier, I started out with a Smith & Wesson M&P Sport. I was planning on keeping it simple but that plan got derailed rather quickly. I ended up ordering a Palmetto State Armory upper, Monstrum Tactical 10" free floating hand guard, pistol gas tube, low profile gas block, Ghost Rifle .300 aac barrel and a Yankee Hill Phantom flash suppressor.
I ended up deciding to keep the M&P upper complete to prevent the extra hassle of removing parts to switch calibers. right now all I have to do is switch my bolt, carrier and charging handle between uppers when I want to switch between calibers. I will end up buying an extra bolt, carrier and charging handle sooner or later so I won't even have to switch those out.
anyway, I also switched out the factory 7# trigger in the S&W lower with a RRA 2 stage varmint 3.5# trigger. for my sighting system I elected to go with Nikon AR rings and a Nikon ProStaff 3-9x40mm scope with their BDC reticle. using Nikon's Spot On software with my choice of ammo, Hornady 110 grain V-Max bullets, and zeroing in at 200 yards leaves my BDC aiming points at 250, 300, 350 and 400 yards...give or take a couple yards.
using the 200 yard zero method, I only get a 3.25" positive difference at max and that is at 100 yards. for my hunting purpose, as long as I put my cross hair on the heart from 0 to 200 yards...i'll have a dead deer/pig. the only thing I am missing now is a sling. does anyone have any suggestions for me on this. being that I am using a free floating hand guard, what kind of sling mount should I run on the front that does not attach to my hand guard?
oh and here is a pic of my rifle before and after my Krylon paint job...