Hey guys, I really need to paint the barrel of my Grendel as a preemptive strike against FE2O3. I had the upper built custom and I can't figure out how to remove the hand-guard. It looks as though there might be a jam nut that needs a spanner to get off but I'm not sure and I don't want to start wrenching on things. Anyway here's a pic, maybe somebody has some idea?
Thanks in advance!
Thanks in advance!