Remington Express Washer

We have found that most Remington Express Air Rifles and a lot of Air Rifles suffer from quick assembly methods. That is the piston washers are not eased past the cylinder slots so end up being torn on the sealing edges. That is why it can be worth tuning or checking your gun.
This is a very short video showing the damage this can do to your piston washer.
https://youtu.be/8wlydSfR0hs