I Have to get one of these!

[Mobhack]

maybe an institutional memory of the problems of having to fiddle about with blank rounds for firing r/gren, and not having troos use a live round by mistake?.

Bullet trap R/gren have been around since the mid 70s, for 5.56mm anyway, but it took the UK army till the late 90s to introduce RGGS. However this will now be replaced with the L17 UGL (40mm H&K) - which will also (possibly?) replace the 51mm platoon mortars. I think the UGL has the advantage of accuracy at the longer ranges, but primarily it has a round ready to go that is not interfering with the proper use of the rifle.

But neither really replace a section individual weapon, like the 20mm thingy would have to.

Andy