This is similar to the valve that is in the car tyre....if you press the pin valve you let the air out....here it is done with a hammer for a fraction of a second as the pressure is 10 to 100 times higher depending on the pressure design and the air exhausted is routed out towards the back of the pellet which is shooted out because of this air pressure
Hello sir, sa ngaun wala po ako balak tumanggap ng pagawa eh..super BC po ..tutorials lang po muna ako para makagawa din po mga viewers naten.THANKS ..STAY SAFE