Originally Posted By: cathntrI have the New Frontier Armory lower so I will need to get mil-spec for that one im thinking and anything I get for my upper will need to be commercial being that its a DPMS? Is this correct?
What parts are designated commerical spec for your upper? What parts do you believe come in either flavor for your upper?
If you purchased your NFA lower complete with stock, then the answer is this: Remove the stock and if the back of the buffer tube is at an angle, then it is a commercial tube, if the back of the tube is flat, (perpendicular) to the long side of the tube, then it is mil-spec. Buy accordingly. You have a 99.999% chance that the buffer tube NFA uses is mil-spec.