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What is the proper way to seat the reg piston in the block, I saw ernest rowe use a tool and I saw someone else use a needle nose pliers wrapped with tape which looked awkward. I reached out to ernest and have not received a reply, FX usa doesn't have a tool. Any help will be greatly...

Is it safe to dry fire an FX CROWN multiple times?

What is the max reg pressure on a mark 1 gen 2 FX Crown, 150 or 160 bar?

What might the fastest speed a stock .25 cal FX Crown MK 1 Gen 2 600mm barrel push the jsb diabolo exact king heavy mkii .25 cal 33.95 gr?

After replacing the FX OEM transfer port with Ernest Rowe dual transfer port how much fps increase should I expect to see on a gen 2 Crown without retuning?

Is it necessary to remove the liner and the liner assembly with the shroud before heating the OEM brass transfer port on the Gen 2 FX Crown?

After replacing my 600 mm stx barrel liner on my Crown to a 600 mm Superior liner I experienced a loss of fps with the 25gr JSB'S. I am aware the twist is different. Is it normal that there is a need to re-tune?

Has anyone tuned their FX Crown to shoot the .25 cal hybrid slugs?

After polishing my barrel with JB paste accuracy is gone? Crown is not damaged but something went wrong, pellets look like bird shot on target. Any help would be greatly appreciated. 

What are the sizes of the Kral Puncher Pro 500 .22 cal internal & external barrel o-rings?

I have a Kral .22 cal Puncher Pro 500 I am considering polishing the barrel. I have 3M 4000, 6000 & 8000 grit paper. I am uncertain how to remove the o-ring inside the barrel and need it's size in case I have to replace it also the size of the outer barrel o-rings. If anyone have any tips and...

Has anyone been able to increase the sound suppression on a factory made suppressor?

What are the causes of pellet clipping the muzzle end of a moderator?

When the hammer spring is maxed out is there a way to increase the power on rifle listed in topic.

Does anyone know the o-ring size on the valve block which seats in the breech block. There are 2 of them.

What is the proper way to safely degas this rifle? Please advise

The 500cc aluminum tank is very heavy and I would like to replace it with a 480cc carbon fiber bottle. Anyone here know if the threads on the Kral valve assembly is standard and will be compatible with carbon fiber bottles that are available?

How to increase the hammer spring tension of the puncher jumbo?

Anyone here own one and willing to share your thoughts on this rifle?

Which rifle shoots .22 JSB Redesigned Monster Pellets accurately?