Question to the Ministry of Defence:

To ask the Secretary of State for Defence, what assessment he has made of the potential merits of adopting the 6mm Advanced Rifle Cartridge (6×38mm) for use in a) individual and b) specialist weapons within the UK armed forces.

As advised in my previous answer to Question 125983, Project GRAYBURN is currently in its concept phase. An important output of this phase will be the definition of user requirements, covering the full range of performance characteristics, including calibre and operating system.