One of those "bolt-action" CO2 powered types modeled after a real rifle. Gun was handed to me for "fixing", it is leaking gas somewhere (audible hiss when you put in a new CO2 cartridge).

Current own would like to fix it so his son can use it (kid is coming to age).

Is anyone familiar with those whom could give me an idea how they come appart I've seen pellet/bb guns that seem to come appart like glorified Chinese puzzles in the past so I figured I'd ask before I start backing out screws and drifting out pins.
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