BRASS DOUBLE ORING CYLINDER HEAD LDT War Interest (v2) , V2.0 Gearbox + BRASS NOZZLE : BEASTPRO UPGRADE
If buying for the LDT war interest gearbox this one fits (v2 version) (the one that can not remove the main spring unless open gearbox)
Very nice 👍
V2.0 Gearbox setups