Where is a hopper on a airsoft gun?

Paintball to Airsoft gun conversion kit?

• Can't remember where I saw it on the internet, but it was awesome. Had a 6.01mm barrel insert and an m4/m16 mag converter that worked upside down (looked like a Bren L4A4 light machine gun) that plugged into the hopper feeder, also came with a shortened bolt necked down to 6mm. Worked on C02. You could adjust the fps from 400-650 fps by tighting the rear pressure screw on the PB gun. If you see it please post a link. best invention yet. Would change useless paintball guns into fully automatic airsoft guns.

• Answer:

  i have never heard of it but i agree that that is incredible, they also have paintballs that are small enough to be used in an airsoft gun that shoots 300 fps or lower