[Azathoth]

Originally Posted by kudykam

So I bought Kanzen 8 mm beraings and Modify Torus 8mm gearbox, but unfortunatelly these bearings are much thicker then standard ones and it doesnt fit my lower reciever. I am wasting money for high end airsoft upgrade and I am more and more dissapointed. My gun is still not working because many incompatibility issues.

As Skruface said above.

You cannot buy the "BEST Brand" for each part and put it together and expect it to work. Each manufacturer has different standards and Quality processes and in some cases different design philosophies on "X" part, which may not be 100% compatible with other parts.

I don't like Systema compression components, I prefer modify, prometheus and TM over prometheus. However it's easy to mod and fix the compression system of the gearbox so the brand isnt all that important.

To give you some examples of where I gained some performance by consolidating brands.

I switched my systema air nozzle to prometheus to match my prometheus neo hopup, gained 25 FPS, no tweaks to the air seal on either setup it was good on both setups.

On the P90 switched from a Systema air nozzle to a TM air nozzle and gained 30 FPS with M110 spring.

Go visit airsoftmechanics.com Their is excellent discussion on brand compatability. People running RIOTSC gears will not use modify shells because the bushing/bearing holes are not on TM specs.

I group components into 2 categories. Keep all the components within a working category or system the same brand.

Gears/shell/bearing/bushing
compression system (PH,Cylinder, Cylinder head, nozzle, Tappet, hopup unit)