Air Arms S400 MPR fill adapter?

I have just received my rifle and the only way I can fill it is with a foster fitting. Here’s a photo of the the suppled fill fixture. What and where can I get an adapter to use my foster fill probe? Charles

5F298442-8BFD-4092-A9BB-121A2FA5B914.jpeg
 
It has its own series of hassles and delays, but such mods (especially for British guns) always seemed to ultimately come from Best Fittings UK. Here is a link to an S400 search on their site:

Bestfittings UK S400

At least looking at this will give you ideas as to how you can modify your new S400 to fill using a normal Foster fitting, and maybe you can find the needed parts more locally?
 
I have just received my rifle and the only way I can fill it is with a foster fitting. Here’s a photo of the the suppled fill fixture. What and where can I get an adapter to use my foster fill probe? Charles

View attachment 551279
I've ordered this adapter hoping it works
 
I've ordered this adapter hoping it works
it will work. I have a air arms s400 biathlon with the same air cylinder. you need to unscrew the air cylinder from the receiver each time you need to refill. Attach the supplied brass din adapter to the cylinder, and make sure the bleed screw is hand tight, Next you attach the silver adapter to the brass din adapter. Finally attach your foster hose to the silver din / foster adapter. Even though the max pressure is 230 bars, I fill to 200 bar. The air rifle is not regulated, and I get my pretty consistent velocity from 200 bar down to 130 bar.
 
  • Like
Reactions: sekiar