I don't know anything about the gas rams but I beg to differ on springs not wearing out because the one in my Diana 34 wore itself out into four pieces loaned out to my neighbor. I cant tell you how many pellets have been through it but north of five thousand is accurate. I didnt know springs were a wear item until I started researching the topic. The gun is down waiting on my Macarri tune kit. Just a spring is twenty dollars plus eight shipping but they are out of stock and I wanted the full tune kit anyway. If you are a high count shooter I would get a spring and piston seal from the vendor of your choice to have on hand. Maybe checking velocity with a chronograph may alert you to a pending failure, others with more experience might chime in and enlighten us.The first 135 received was early in the production. Better finishing through out however the next one .25 was very nice also. The first one had a very slow leaking Vortex gas ram. Did not notice it until after the warranty expired. Could have been what you are talking about. Not sure. Hatsan sent a new Vortex ram to me that only cost $40. Neither has ever been an issue for me since and they are stored standing up in a safe. Same with several other Vortex 95’s and never a problem. Maybe the issue was early on. No matter as when they give out (and sooner or later they will) they will be replaced with springs anyway. Gas rams have seals and seals expire. Springs don’t. They rarely break. They can be tuned as smooth as gas rams. Everything is a trade off.
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