I had one years ago & I was thinking about getting another one but the 2 little bolts that hold the folder on seem like they would break easy. How durable are they? It seems like if you accidentally smacked the stock into a door frame those 2 little bolts might break or strip out of the threads.

Could you drill and rethread with bigger bolts?

The stock is plenty strong, but the attachment method has always been a dealbreaker for me.

You have quite a bit of surface area (entire rear trunnion or adapter block) that is also supporting the bolts. It would seem to take a LOT of force to break those bolts from a strike to the rear of the stock because the entire face would have to give as well. I guess if you got a direct downward force directly on top (or bottom) of the attachment point you could break the bolts, but I don't see that happening in any real world scenario.