Type A Var 2 & Var 3 Trigger Housing

Would greatly appreciate it if someone could post some detailed pictures of a winchester Type A var 2 and var 3 trigger housing. I am having difficulty in differentiating them and Ruth's book is not clear on the issue. Many thanks in advance.

EOD tech

Is that the same as a type I and type II?

Bill,

Not sure but I'm going to say yes. I'm referencing Ruth's classification. If there is another standard reference out there, I'm unaware of it.

Thanks
Andy