All metal internals vs as much plastic you can get in a springer

[Barryg]

Nope


Here's a picture of two German Pistons for you :-


image.jpg


The piston on the left is a well designed and precisely machined quality product having Delrin bearings giving low coefficient of friction which also act to cut down on piston resonance.

The piston on the right is a piece of shit from Diana.

You seem to be assuming that the pressures touching piston/cylinder from the Delrin bearings and the metal bell bearing are the same but a precisely machined and hand finished piston and a central piston rod would hardly touch the moly lubed cylinder so even if plastic has less friction there would be still be more friction because the plastic rings would be touching with a even pressure all through the piston stroke, thats why precision made metal parts have less friction in a springer but would cost a more so it is much more easy to manufacture pistons with rings as they can hide any small faults and look like out of the box tuned guns. And metal parts look better when you dismantle your gun and will last a lifetime unlike plastic parts

Are you sure that you have posted a picture of two German pistons and not Bulgarian