I was thinking SLR rifles with the long 10" bayonets Doug.
They are quite interesting because while they are for the Indian made UK spec L1A1 rifle with our flash eliminator configuration, they are made to the No5 spec with regards to the grip screw hole centres. That is approx .85" between centres for the No5 and Indian 10" L1A1 bayonet and 1.25" approx for the L1A1 rivet hole centres
Peter, Does' this mean that you are Officially 'A Rivit Counter' now?.....................LOL!