It looks like CZ brought back the left handed 22lr rifles again. Yes they were discontinued for a short time.
While I don't have experience with the Savage B22 and it's rotary magazine, All of the Savage MkII rifles shoot great for me. Don't forget to look at the Savage MkII GL, FL, or BTVLSS
G = wood stock
F = synthetic stock
B = Boyds laminate stock
L = left hand
V = varmint barrel (medium heavy barrel)
The MkII G and MkII F along with the B22 F are available in left hand with the sporter barrel while the BTVLSS is the only left hand MkII available with the varmint barrel as far as magazine fed rifles are concerned.