I send you some photos of one modified long STEN and few of the loading systemЕ I have written articles in THALASSA magazine (in Greek of courseЕ) for long hi press pneumatics and for the loading system tooЕ I will scan the articles and I will send them to you as soon is possibleЕ This modified Mares has a Kevlar reinforced barrel, home made plastic long pistons, inox home made brake system, home made front plastic plug, anatomic stock, new trigger mechanism, etcЕ I have construct this gun five years ago looking for the maximum powerЕ last three years I constructed two more long hi press pneumatics. One made from Russian titanium (I bought the tubes from SwissЕ) with 13 mm inner tube and 45 mm outer, working at 80 bar!!! and another fully modified long STEN with long home made plastic plugs (front and rear), carbon fiber reinforced outer tube (40 mm, a little bigger than the Mares oneЕ), carbon fiber piston, inox brakes, etcЕ the gun works at 65 bar (I have test it until 90 but I don't need more than 8 to 10 m. of range!!!! -with 8 mm shaftЕ) and I use it for snapers (dentici in ItalianЕ) Sergiy, Take a look at http://users.hol.gr/~paran to see (in Greek of courseЕ) my personal web site with a lot of wooden guns (a roller gun between themЕ) and the STEN I described firstЕ I am sorry about the poor quality of the site but I have made it aloneЕ DON'T FORGET THAT I AM A TOPOGRAPHERЕ (I have made this site just for the HistoryЕ) Have a good night, Panagis Aravantinos

Panagis Aravantinos Panagis Aravantinos

Panagis Aravantinos

Panagis Aravantinos

Panagis Aravantinos

Panagis Aravantinos

Panagis Aravantinos

Panagis Aravantinos

The modified Sten is also very interesting. At an 80 bar working pressure I can see why he wrapped the gun's outer body tube with Kevlar! I can also see that it was originally the "87 model" judging by the handgrip (I sent you the Mares parts diagram for this model some time ago), although it has been heavily modified with the new yellow grip. The winch and cable system would be the only way to load such a long gun, but may be a nuisance to carry in the water. Maybe he only needs one shot while lying on the bottom and shooting from ambush. I am surprised at the size of the large muzzle ports, there is not much metal left to hold it together. His braking system must reduce the impact on the muzzle, but perhaps it is made of stronger material. Your hydropneumatic system has a big advantage by hydropumping with multiple short strokes of the shaft, it eliminates the long travel of loading (and maybe bending) a pneumatic gun's spear. That is why he needs that winch. The cable would not want to break during loading! Regards, Peter Currer.

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