Sheridan model A/B original style pump cups. These cups were made with Viton
85 A shore hardness rubber for long lasting use.
It will allow you to get the most maximum power possible.
Factory drawings were used to reproduce these cups.
Some homemade cups don't always work as well.
Cups is priced high because of having 2 sets of molds made, it was not
cheap!!! Only a few limited cups will be made.
My thoughts is that 90% of the time the reason why these rifles fail to shoot
is because of an old harden pump cup.
I do combine shipping if multiple items are bought. No