The bayonet was royalty free, but.........! FN got their pound of flesh when it came to paying for our changes in design of the flash eliminator that was to accommodate our bayonet over the the two (?) variables* of bayonets that came with their design
(* feel free to correct this anyone from the bayonet community)

Further to thread 9 above, this mixed fleet saga also gave Oz and NZ a bit of a headache because when batches of Oz bayonets went down to the big Field workshops or came up from Ordnance, they came back modified to the UKicon L1A3 spec - with recessed pommels and short catches! Both of which were alien and not recognised in Oz. The Australianicon EMEI was eventually altered by WO1 'Jock' Cunningham (another nice bloke whom we called 'sir') after it was all explained to him and he got a UK EMER from the REME/RAEME/RNZEME/FMEME inspectorate in Singapore, to the effect that where these UK type L1A3 bayonets were encountered in service (due to mixed repair/Ord etc etc) in Australia, they were to be treated as standard bayonets and where a new catch was required it could be replaced with a suitably modified (shortened) Aust made catch. So if anyone's reading that V-150 EMEI in Australia or NZ, that's the reason and he's to blame.

Don't even start to ask me how I remember all of this crxx after all this time. Sad or what.......