Quote Originally Posted by Paul55 View Post
Always store them empty & remove the Co2 capsules. When they are left in the pressure on the caps will leave an impression on the seal. Over time the seal will degrade & fail. A good tip is to put a drop of Pellgun oil on the end of the cap, one drop every 2nd or 3rd cap will be fine. The oil keeps the seal flexible. It's only PCP riles that benefit from being stored with a small amount of air in them.
Agree totally; I have 3 of these guns in different variations and always store them with capsules removed. I also use Pellgun oil and the only time I've ever had a problem with the seals is when I used to leave the capsules in. With the Pellgun oil the seals remain flexible no matter how long I leave the capsules out. With the capsules in, over time, the capsule will weld to the seal/deform the seal and then you may have to drill the capsule AND replace the seal. It's easy to make a de-gasser for these guns too.