Air Arms S410 O-ring Kit Specifications

I recently purchased and am waiting delivery on a 2008 AA s410. I bought it from the original owner and It looks like the rifle wasn't used much and currently has no air in the reservoir. I am expecting to have to service the rifle and also expect I will need to replace some of the o-rings. 
Does anyone have a spec on the required o-rings or know of a place to purchase a kit? There is a guy on ebay that sells several AA kits but is kinda sketchy on what, if any spec his kits adhere to. Thanks
 
"wewing"
"Dirte"
"wewing"Thanks. It looks like I can get an actual AA kit from the UK cheaper than a generic kit from Pyramid Air.
I ordered the one from the UK because I needed a FX kit also. It took about 9 days to get it here to the US.
Did you place your order through Bagnall & Kirkwood? Did they provide good service?
Yes I did buy from them. Like I stated above fast shipping to WA. Little spendy on overseas shipping but I needed both items.
 
"Dirte"
"wewing"
"Dirte"
"wewing"Thanks. It looks like I can get an actual AA kit from the UK cheaper than a generic kit from Pyramid Air.
I ordered the one from the UK because I needed a FX kit also. It took about 9 days to get it here to the US.
Did you place your order through Bagnall & Kirkwood? Did they provide good service?
Yes I did buy from them. Like I stated above fast shipping to WA. Little spendy on overseas shipping but I needed both items.
Was your kit FX branded or was it in-house assembled?