This is a kit we have been working on for a while to help your PTW feeding correctly with brushless motors, it can be installed with brushed motors as well.
The kit comes with Screws because the delayer bar and screws come glued from factory, the only way to loosen them is by appliyng heat, but some PTWs have POM piston heads and pistons (plastic), wich would be completely ruined if you use heat close to them.
So our solution is to include the screws, so you can cut the original delayer bar if you have no other choice. You must use thread lock on the screw when installing (blue one preffered in case you need to disassemble in the future.
You must use your original delayer bar spring.
The extra oring that comes in the package is meant to be installed under the oring that catches the nozzle. Remove your (white/red) oring, make sure it is completely free of any grease (same for the oring housing), install the black thin oring we provide and then your nozzle oring.
And thats it!
Beware that healthy mags and good bbs are crucial for a good bb feeding.