Benjamin 310 pump cup

[Pnjclark]

hello everyone,
I'm so glad I found this group / forum of enthusiasts.
I came across this Benjamin 310 Pump airgun and want to resotre it to operating condition.  I ordered a seal kit from Baker airguns.  I got it all pulled apart, and mostly back together, but I am a bit befuddled by the pump cup that came with the kit.  As you can see in the pictures in my post, my gun's cup is completely different. 

anyone have any ideas on how to overcome this obstacle?  the gun can't build any pressure with the current setup, and there is no screw in the current setup to remove and replace the cup.  Is there a different part i need to order?

Thanks ahead for any advice guidance and input.

V/r
Paul

[tennx]

I would suggest calling baker ,if no one replies (which would be unusual..) …dont email as he doesnt reply at least in my exp….good luck

[Van]

There are two different pump cups based on the date of mfg of the gun pre 1965 used a different seal than the ones made after. You probably have the wrong one. They should have both available. If not I got mine from JG Airgun. The screw type is pre 65.

[Pnjclark]

I would suggest calling baker ,if no one replies (which would be unusual..) …dont email as he doesnt reply at least in my exp….good luck

That was going to be my next move.  I emailed him Monday, but haven't heard back.  I'll give him a call.  Thank you.,

[Duckfish]

Can’t tell, is it leather?

[oldair]

Looks like your gun has the early "molded-on" cup that required replacing the whole pump head, vs the later one with a hole through the seal so it can be pried off and replaced.  The remedy is to buy both the later style brass head and cup.  You may be able to get the head from Baker, or from JGAirguns.biz

Don R.

[avator]

MAC1 used to carry them but Timmy has been MIA so good luck with that.
Might give Rick Willnecker a call at Precision Pellet.
https://www.airgunshop.net/