I have just been testing a 111 ready for sale. I have always been surprised that these pistols are not popular in UK, and I think it is a misunderstanding regarding recharging of CO2 which is so easy. I buy full fire extinguishers for £10 (hundreds of fills), remove the diffuser cone from the end of the hose and you are left with a 1/8 BSP male thread. This will screw into the American thread on the Crosman air guns. When everything is tightened up, press down the fire extinguisher lever and hey presto, the pistol is recharged.
To get more liquid gas in you can cool down the pistol in a fridge for a while before filling but I never bother, you get a lot of shots anyway. Using a long hose you waste a lot of gas when disconnecting, so I am going to make up a very short unit of a few inches. Does anyone know what the thread is on the fire extinguisher discharge valve ? These pistols are not expensive in UK, I believe Lawrie has 3 for sale, the shorter version 115 and 116.

Baz