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There's a setscrew that holds the barrel in.
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The setscrew.
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I pushed the barrel out by twisting and pushing.
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The power adjustment mechanism. It regulates the relationship between the valve lever and hammer.
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The underside of the grip frame, showing the adjustment screw.
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The valve assembly.
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Lovely green goo in the CO2 piercing cup.
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An 11mm wrench unscrews it.
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The piercing pin came out with it. YMMV.
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The piercing pin and cup. I love that green color.
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The end of the valve assembly.
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The end unscrewed. Should I throw in a pitch for using a properly fitting screwdriver?
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There's an o-ring to seal the end. The exhaust valve and spring came out.
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The exhaust valve and spring.
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It's difficult to make out but there's a slot into the valve stem right where the seal is. The seal was toast...
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The stem is hollow. Gas flows around the seal, through the slot and through the stem to the barrel, picking up the BB on the way.
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The spring for the valve lever. The steel washer bears against the step in the valve stem.
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All the parts.
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There's a seal I couldn't get out where the piercing pin and cup screws in. It seems fine so I'll leave it.
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One exploded gun. Note the large diameter piercing screw and huge brass nut. Forgot to mention those, not that it matters.
I'll blog about resealing it in a few days.
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