GBB Rifle Mag in AEG

[pizzainthemorning]

And the mechanism, if designed properly (key point), should give blow back. Imagine it just like a scaled up GBB pistol. If a GBB pistol can move an entire metal slide backwards and compress a return spring with a decent kick, then I don't see why a slightly beefed up version wouldn't be able to move back a piston and return spring, giving kick at the same time. Instead of the recoil coming from the slide hitting it's rearmost position, it comes when the piston hits its rearmost position (which means you'd probably also want a heavyweight piston).

Alex

[Styrak]

If you don't have a disconnect lever (like on a pistol, which gets tripped when the slide starts to move back) you'll vent the entire mag of gas. It doesn't just stop for no reason.

[pizzainthemorning]

But it would vent because there's pressure on the valve, correct? If there's no pressure on the valve, then why would it vent? The valve has its own return spring to put it back to a resting state. So when you take a mag with your hand and depress the valve with your finger it vents gas, when you release pressure, it stops venting. If the hammer/firing pin was "free floating" (in that could move freely forward, but wasn't pushed forward) then the inertia of the pin coming forward would depress the valve, but in a resting state there wouldn't be any pressure on the valve and its own return spring would put it back to a resting state.... yes?

Alex