The FWB 150
The FWB 150 is a sidelever spring-piston rifle that uses a sledge system to allow the action to recoil inside the stock to counter the piston’s motion. The action slides rearward a fraction of an inch on steel rails when the gun fires, but the stock doesn’t move. Technically, the rifle does recoil, but the shooter doesn’t feel it, and the rifle behaves like it was held by the artillery hold. The result is greater accuracy but with a slight annoying feeling of the action coming back at you. You feel that in your sighting eye, when the rubber eyecup slides back.