On one of the Tippmann M4-22 FB pages a chap from the USA just posted photos of his M4-22rf with a binary trigger installed. It prompted a discussion about which US states allow these and which have banned them.
FYI: a binary trigger fires a shot when pulled, and a shot when released (two for a single trigger 'cycle').
Initially I thought this might be UK legal as I wrongly believed the full-auto definition was along the lines of 'a single pull of the trigger firing more than one shot'....but I had to eat some humble pie on the FB page after looking at the 1968 Act and found it prohibits any firearm where 'two or more missiles can be successively discharged without repeated pressure on the trigger'.
Now I'm sure I remember burst fire used to be legal but going by the 1968 definition they couldn't have been - am I going
