It is finger tight. It comes set from the factory. If you buy a new breech plug. You have to fit it by using the wrench just the first time.

The original BP was made before BH 209 came out. It works, but it's not as reliable as the new BP's made for BH 209. They cost less than $25, and is worth it to not worry about ignition.

Personally, I feel new CVA's should come with the new BP.