[e-luder]

^what he said...


Your bolt actions the hammer and the hammer (uncharged) prevents your firing pin from actioning; thus will keep your blowoff valve open until gas runs out (or until you charge the gun via charging handle or drop the mag).

Lamen's terms: The firing pin will not charge (then blowoff valve pushes back on the firing pin) until it is "allowed" room to do so. It can't charge if the hammer is isn't charged...

im confused by what i just said.

You can see this happening yourself. It's happeninng when your mag runs low on gas and can't action the bolt fully anymore. The system just vents gas until there is no more or until you manually charge it or until you drop the mag. So, you can try it yourself. try it on a pistol or somthing. It's the same principle and same result...