Avon Respirator drinking system

Testing the Avon Rubber respirator/gas mask drinking system.
Unfortunately the reproduction British canteen I bought does not have the correct threading for Avon caps!
I'd recommend everyone steer clear of the Highlander canteens sold by military first, considering it is not actually a proper Osprey bottle reproduction.
However other than that the Avon drinking tubes work with no problem.
Masks used were the Avon S10 and Avon FM12.