Different butt-slide and butt interfaces

[Peter Laidler]

Changed for simplicity and ease of manufacture. Originally made so that the butt would only fit one way - the correct way! But quite soon it was realised that only a clown would fit the butt upside down.

Given any butt a real Armourer would easily fit it to any butt slide - which we regularly did. There were exceptions. Only a Mk5 butt was to be fitted to a Mk3 gun

I seem to recall that there was not a part number change for the butt or butt slide. The slight changes were noted in the earliest Miscellaneous instruction part of EMER's