Being in Canada, I had originally purchased the 495fps benjamin trail NP .22 (bt5m22). I have since acquired my firearms permit and was looking to purchase the 900 fps version but due to cost, it seemed easier to convert my existing air rifle. I called the Canadian crossman parts distributor (gravel agency) and got the required replacement gas spring and piston parts for the bt9m22 model and added them to my rifle.All seems good at this point, but I have a question for existing owners of the 900 fps version.Does your rifle bend all the way to physical limits when you cock it? My 500 fps gun went to about 90 degrees, maybe a little further, but with the new piston component I have to bend it more towards 150 or 160 degrees, fully compressing the gas spring. The power is amazing, but I'm not sure it was meant to work this way. Since crossman won't provide the exact details on what parts to replace to do this conversion, for liability reasons, I'm wondering if I should have kept the original piston, and just replaced the gas spring. This would have given me the same distance to compress to cock it, but hopefully more power due to stronger spring (although since there's no part list or indicators on the bt5m22 parts, it's also quite possible the gas springs are identical... I don't have the equipment to verify).
Quote from: gaunt on May 09, 2013, 04:23:28 PMBeing in Canada, I had originally purchased the 495fps benjamin trail NP .22 (bt5m22). I have since acquired my firearms permit and was looking to purchase the 900 fps version but due to cost, it seemed easier to convert my existing air rifle. I called the Canadian crossman parts distributor (gravel agency) and got the required replacement gas spring and piston parts for the bt9m22 model and added them to my rifle.All seems good at this point, but I have a question for existing owners of the 900 fps version.Does your rifle bend all the way to physical limits when you cock it? My 500 fps gun went to about 90 degrees, maybe a little further, but with the new piston component I have to bend it more towards 150 or 160 degrees, fully compressing the gas spring. The power is amazing, but I'm not sure it was meant to work this way. Since crossman won't provide the exact details on what parts to replace to do this conversion, for liability reasons, I'm wondering if I should have kept the original piston, and just replaced the gas spring. This would have given me the same distance to compress to cock it, but hopefully more power due to stronger spring (although since there's no part list or indicators on the bt5m22 parts, it's also quite possible the gas springs are identical... I don't have the equipment to verify).'scuse me.... in canada you have to have a firearms permit to have an air rifle??? i didnt know that ... i am sorry.
Only one above a specific power lvl, then they concider them a firearm....