With the cap and forend off, hold the bolt partially back, and just slide the barrel off towards the front.
Take care not to lose the metal ring and "O" ring - and be sure to make note of their relative positions and which side of the metal faces the receiver, for reinstallation later.
After removing the barrel, and ensuring the hammer is cocked (pull the bolt all the way to the rear) - use a small drift to remove the two unequal pins in the receiver that hold the trigger group in, then withdraw the entire trigger group downward out of the receiver for flushing/cleaning/lube.
If you pull the trigger with the trigger group out - like to work in cleaner and/or lube - simply recock it with your fingers B4 attempting to re-install the trigger group in the receiver.
Re-assemble in reverse order.
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