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New guy intro and some questions

LivnoutdoorsSPC

Private
Full Member
Minuteman
Mar 22, 2012
37
0
37
Union Grove, WI
Hey guys-
I'm new to the site, but not to ARs and the forum scene. I built my first AR about 2 years ago and BRD ensued! I do my own reloading for a lot of calibers, and I've come up with loads for each of these rifles that print under .6moa. I took the 18" out to 200 and was able to get under .5moa. Here's a couple pics of my two 6.8 builds.

18" Bison SPR
dscn2792d.jpg


16" ARP SOCOM
dscn2954y.jpg



I recently came across a good deal on this upper:
http://www.dpmsinc.com/store/products/?prod=4775
So I'm going to build one in 308. I know I have to find a lower that is DPMS compatible, but are there any part compatibility issues with other LR-308 pieces, specifically the handguard? I read about DPMS raising their rail slightly that can make a misalignment between the top rail on a FF tube and the upper, but that's not an issue for me b/c I only plan on putting glass on it.