Originally Posted by Droideka
It's a little metal disc that doesn't do a huge amount.
How else are you supposed to shoot 285 fps with that piece missing? It helps compress the main spring when your tightening your velocity adjuster.
Just cut a small piece of galvanized steel into the shape of the flat disc or buy the flat disc for $1-2
Make sure you have enough C02/Air. The marker will stop working if the tank isn't pushing a certain amount of psi. Check each piece to make sure their isn't anything blocking the gas starting from the asa, to the steel line, into the gas thru grip, into the volumizer chamber, and then into the body.
I'm assuming this is a stock marker with no changes to the springs especially.