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The new power block has 3 orings inside to seal the valve housing and one more oring inside to seal the barrel. We need to know their sizes cause I noticed they are easily nicked. 

I have recently bought Sekhmet digital gauge and I decided to test the performance and fill speed of the regulator on my impact mk2 PP. I have tested it at different cylinder air pressure from 140b up to 250b. The regulator is slightly modified, polished and smoothed the washers...

I would like to share with you guys a new idea for the power wheel of the FX impact, it's just an idea and can be improved or changed if required. All the measurements in the drawing is just to explain the idea better. The idea is to change the power wheel from the current cam design to a new...

Hello I decided to clean my impact and reseal the regulator. I found out that the washers are set different from pre power plenum impacts. I'm not sure if it supposed to be like this or is it a mistake made in assembly.

My new impact power plenum's power wheel is different from my older impact power wheel function. In older impact Max > 5 > a > 4 > b and so on...5 used to give slightly more fps than a. In newer impact 5 = a and 4 = b ... 5 equals a in fps . I have measured with caliber to make sure and they are...

After installing the large plenum when I fill the bottle to 250b from 150b the regulator gauge will go up 5 to 7 bars. For example the reg is set at 130b when the bottle is full at 250b, when the bottle go down to 200b the reg will go down a bit to 126 and so on. It's more pronounced in Huma...

Hello everyone I bought my slug liner few months ago and for some reason I put the two liners together. I noticed that slug liner is slightly shorter than pellet liner. Is this how it suppose to be or I received a bad liner? Here some pictures I took.

Hello I have just received a 6.5 bore valve seat for my impact. I tried to fit it but it won't install fully in the valve housing. I noticed that the oring groove is on the back side. Here are some pictures, Is it machined correctly? 

Fx impact cocking lever doesn't have any resistance before cocking the hammer. It works and cocks the hammer fine. But it's so loose when it's back to normal position. https://youtu.be/eaJwkAhBCS0

As expected, Huma now has a new version for the 16mm piston. 

Hello I just got my new impact pre x model with thumb screw on barrel. I removed the screw and I tried to remove the barrel but it won't move. I tried to pull as hard as I can but still not moving. Gun is shooting great and cocking very smoothly. Any idea on how to remove the barrel.