What is this???

[Bill Guadagnini]

I got this at a gun shop where there was a bunch of black powder stuff in a bag i think it is some sort of nipple valve for a C2 discharger to blow out a dry ball is thatit has threads on one end and a blowout valve to the side has anyone seen these?

 

[AZbpBurner]

Yep, zakly whatzit is.

 

[Bill Guadagnini]

Thanks for the confirmation!