Seems like it has already been done; there was a guide on airsoft-barracks.
Also, I thought J-hop was original name for flat hop?
Also, I thought J-hop was original name for flat hop?
http://www.airsoft-barracks.com/forums/topic/26048-hop-up-modification/page__pid__259489#entry259489I didn't see the topic on airsoft barracks. A link would be great if you could provide one. I'm sure everyone here would be interested in reading about it.
I was under the presumption that the flat hop involved flipping the bucking inside out and grinding off the "bump" and "alignment lip", basically allowing you to rotate the bucking to use a smooth factory molded surface of the bucking. Then using a new hop nub of some sort (nerf dart, eraser, etc) to push the smooth surface down into the hop window. But I'm new to all this, so maybe I presumed wrong. Someone please fill me in if that's the case.