The Howard Francis self-loading carbine was a conversion of a No. 1 Mk III to the 7.63×25mm Mauser pistol cartridge.Special Service Lee Enfields: Commando and Auto Models by Ian Skennerton. Published by Ian D Skennerton, 2001. . It fired in semi-automatic only and suffered some feeding and extraction problems and, despite meeting accuracy and soundness of design concept, never made it past the prototype stage.
The Howard Francis self-loading carbine was a conversion of a No 1 Mk III to the 763×25mm Mauser pistol cartridgeSpecial Service Lee Enfields Commando and Auto Models by Ian Skennerton Published by Ian D Skennerton 2001  It fired in semi-automatic only and suffered some feeding and extraction problems and despite meeting accuracy and soundness of design concept never made it past the prototype stage