So that means the S-System outer barrel is held by the extended rails? -.-
Sorry for taking up so much time, how much of this stuff is wrong then lol...
I would go check it up, but all the other reviews I have found are the "out of the box" ones.
"Cylinder - Brass with a nickel plating. The nickel seems impregnated
with a dry lubrication, possibly Boron Nitride EN plate. Its very
slick compared to the stock brass cylinder. It also resists tarnish
and oxidation. Color is metallic grayish and in photos can look black.
"Cylinder Head - Brass tube for the nozzle is of a smaller inner
diameter than older V.2 gearboxes.
"Tappet Plate - Tappet Plate's wing profile has been changed slightly
Bevel Gear - New style 4 catch Bevel Gear. More catches on the bevel
gear increases semi auto reaction time and lowers the gearbox sound
signature. It also prevents double feeding.
Nozzle - Reported by Japanese site to be different but I dont have a
stock TM M4 nozzle to compare. Not 100% sure of changes.
Lubrication - Cylinder grease was changed from the clear yellowish
type to a white low viscosity grease.