Does anyone know the o-ring size on the valve block which seats in the breech block.
There are 2 of them.
There are 2 of them.
I got a o-ring kit for the puncher breaker from P.A. tech department air venture, from what I see the pro uses the same ones . Also Bagnall & Kirkwood sells a kit online but are in the Uk my kit was around $21 from P.A. Good luck also they are metric