Re: Kpos 21 or HS RONI
I am not sure if that matters particularly, especially since there is no real stress being put on either of the stocks. I have actually heard of a couple of people using the airsoft versions of each of these, which are both around $100, and working well. If I was going to pick one of these, it would probably depend on a couple of other things, like how important a folding stock was, or whether speed of installation was important. Hope this helps, I didnt really expect too much response though to be honest, I think most people find these overpriced for what you actually get, including the stupid stamp vs. a entry level AR rifle.