Originally Posted By: IAyoteHNTRI have been considering trying that. I might have to do a little more research on what all is involved in building one myself.
If you can change a lawn mower blade, putting together the upper is no problem. If you have a vice, you will need an armor's wrench, receiver block and torque wrench. Literally all that is just to tighten your barrel nut to a spec'd torque. It will literally take less than ten minutes to accomplish. If you haven't already, check it out on YouTube.
