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 I was wondering if there is an over the counter fill valve that can be used to replace the stock fill valve to convert it to the foster type quick disconnect valve? I know the websites in England (UK) have them and charge a good bit for one and shipping to the USA. I was wondering if there is...

Would Like to purchase a Sumatra .25 long. Thanks

Bigshot Extreme 500 will do the trick. I have a hatsan harpoon and have shot the bigshot at point blank range and it stopped the bolt going over 500 fps. Granted it did go past the fletching at point blank range. It should work nicely with some distance. Just be sure you are hitting it where...

Hello AGN. I am interested in purchasing a Sumatra 2500 in .25 caliber not the carbine model. I am located in Southern California. I may be open to a possible trade. I have a brand new un-fired sumatra in .22 non carbine still in the box still zip tied trigger still a factory fill...

Like some, air guns have turned into an addiction for me. What I have noticed with my small collection of .25 caliber air guns is about 40 ft lbs of energy seems to be an industry standard with few exceptions. The exceptions list is growing but I still see new models in the 40ft lb range from...

Has anyone done any in depth mods or tuning to a hatsan harpoon? I have been told it uses some sort of gas hammer instead of a conventional spring type hammer. I ask because mine is shooting under the advertised FPE and FPS. Not a big deal getting over 500fps but would like to be able to...