Description Empire Invert Mini Paintball Gun/Marker Players Parts Kit. Includes #7 Foregrip Retention Set Screws #9 Battery Harness #10 Foregrip Screws #15 Solenoid Front O-Rings #16 Solenoid Internal O-Rings #17 Solenoid Outer O-Rings #20 Air Transfer Plate Screw #21 Air Transfer Gasket #22 Check Valve #24 Rubber Bolt Tip #25 Bolt Guide - Large O-Ring #28 Bolt Guide - Small O-Ring #33 Poppet #35 Poppet O-Ring #36 Ball Detent (Complete) #44 Feedneck Screw #48 Air Transfer Tube (Male) Bottom O-Ring #50 Air Transfer Tube (Female) Bottom O-Ring #52 Regulator Mount Screw #55 Regulator Cap Set Screw #68 Trigger Pin #70 Trigger Set Screw with Magnetic Top #71 Trigger Set Screw (Long) #72 Trigger Set Screw (Short) #74 Primary Body Retention Screw #75 Bolt Guide Alignment Screw