I am putting up for sale my G&P m4 ris, it shoots but I can’t figure out why the nozzle is not sealing with the bucking after the gun is all together. With the way it sits it shoots about 190 FPS because of the issue i can’t seem to figure out. But it has the following upgrades: Gate titan advance w/ usb link and installation kit Lonex cylinder Lonex cylinder head Lonex piston Lonex piston head Shs 12:1 gears Retro arms 21.4mm m4 nozzle Asg infinity 30k cnc motor G&P gearbox shell w/G&p bearings Pro-win hop up unit Prometheus 6.03 tightbore barrel 363mm Prometheus purple bucking Modify anti reversal latch Shs shims It will also come with everything that is in the box in the pictures! I am asking 400 shipped for everything in the pictures! No trades!