I have read accounts of British riflemen at Sidi Barrani having to 'lick the bolts clean of sand' in order to get their SMLEs to run in the desert
What killed 276 and Pederson was not the waxed ammo or the toggle lock - it was the USA adopting 30-06 and the Pederson not having a 30-06 weapon in the wings like the Garand did.
There is a reason why the British would become fanatical about the subsequent post war weapon being able to run in the desert -such as the cut outs on the bolt of the Sterling SMG and its over engineered magazine.
BSA made a number of suggestions regarding the Kiraly (including simplifying the complex trigger group) and lo and behold the version made in Hungary is pretty much what they suggested.
BSA said they could produce the weapon for £5 each (Sten gun MkII cost about half this) - considering that they ended up buying Thompsons at more that £40 each I'd say that was a bargain!
And the Vickers stripped down - massive amount of room for a conversion - its like an empty cathedral
As for Pistols - meh - police mans weapon - by having them supplied with each Bren gun kit I was attempting to 'shoe horn them in'
And I'm not even sorry
Basically the BSA-Kiraly or M2 Carbine depending on which post - would replace pistols in front line service - but its the Hi Power dammit