Castle nut tool / Stock Wrench

thingiverse

I'm fed up with my airsoft gun's stock constantly coming undone during games, that annoying little wobble really gets under my skin. So I took matters into my own hands and created my very own pocket castle nut wrench. Believe it or not, it's made of plastic but it works like a charm and keeps the nut firmly in place without me having to resort to using a screwdriver and hammer.