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 you open the gearbox)
Very nice 👍
V2.0 Gearbox setups