If the AR is out of spec to the point that standard parts are not being accepted or incompatible than I would pass unless you are going to leave that gun as is...
I have narrowed my potential choices down to these , DPMS, NEA, Windham and DD. All depending on how much $ I have when I'm ready to buy and what's available, on sale etc. So if I have to go lower end like DPMS, is it any trouble to add this or that rail system, comp etc later. I'm guessing, check with the factory on what fits or doesn't on their product, right?


















































