L20A2 81mm ilum Mortar Info Please

[spotter]

Does anyone have any info on the L20A2 81mm illumination mortar round,weve found a few of these (expended)at work over the years I believe they are now obsolete,i know these are commonly found items but i cant find any info on them ,
I would particulary like to see any tech drawings or cutaways of the fuze for a future project .
thanks in advance spotter

 

[paul the grenade]

heres a few pics from an old pamphlet.
cheers, paul.

 

[spotter]

excellent paul..thanks

 

[Chris 42 RQ]

Bofors !

Produced I believe by Bofors and imported to this country as a stop gap until our own 81 Illum version was made available.
Will be stamped "BTT" all over the place and the rear fin set is made of cast Aluminium with a screw in Percussion cartridge, the inner cavity often has a long spring rotruding from the inside to ensure the flare is ejected correctly.
Main body is of tubed steel which is "rolled" over at the top to be fittted with a Maizac Metel cast fuze.

Nice items that ocassionally surface at places like Beltring, but they are getting increasingly rarer !