I'm not a big fan of reverse clicky switches..
If someone could supply Vinh with solid brass or plated copper Malkoff spec drop-in buckets, I'd like a 12-XPL2 Mule in my 22.3 head
Vinh's quad copper slug and his larger mule heavy-copper slug fit in the 22.3 head.
And for a cherry on top... The Malkoff high-low ring will fit on the smaller copper slug. The mule heavy is too long for the high-low ring to fit.
Here's a 12-HCRI mule in a 22.3 head.