[turok_t]

Originally Posted by ILLusion

If this were possible, then Tokyo Marui and all other GBB manufacturers would not have created a moving nozzle system. Same goes for real steel. There has to be a moving component that allows gas expansion, and thus, movement of the slide from incoming gasses.

It'd be a different situation if it were a stabilized gas rod in a gas tube, with the gas source coming from outside of the blowback mechanism and in through the tube, but this isn't the case.

The way TM GBB's work, is that as gas is expelled from the magazine's flow outlet in to the nozzle, the floating valve directs pressure out the inner barrel until a negative flow is realized. Once the inner barrel is free of the projectile, the floating valve will recognize a greater gas pressure behind it (from the magazine's flow outlet) than what is present in the inner barrel, which will cause the floating valve to close. Once the floating valve is closed, pressure builds inside the nozzle, and the only escape for the expansion is to push the only moving part at this point, which is the piston head. Attached to the blowback unit, the piston head will force the entire slide assembly to blowbackwards while the nozzle remains in contact with the magazine's flow outlet. The nozzle will NOT release contact until:

a) The moving slide pulls the nozzle back
b) The blowback unit trips the valve knocker disconnect lever, which stops the gas flow.

Whichever comes first, usually (b) happens first unless something is wrong with the setup.


If you lock the nozzle to the blowback unit with a rod, the slide will NOT move, and thus, the valve knocker disconnect lever will NOT trip, which will cause gas to blow out of the magazine till it's empty.



Where was the screw placed? There must be some type of movement still occurring.

I don't understand why you want to lock the nozzle in place. I can't see any benefit to it.

Ive been speaking with strikefreedom lately.. He says he wants to short stroke his slide even more by preventing the nozzle from adhering to the hopup chamber. Hes anticipating that the rod will preventing the nozzle from sliding forward so it can chamber the next bb quickier