German 20mm Projectil ID Needed

[khanmak]

Can anybody help ID this projectile. Looks similar to M Gechoss type body but with a very simple internal fuze. Looks very Ersatz, perhaps a late experimental development?

 

[pzgr40]

It's an incendiary "brandgranatpartone 44" projectile with the AZ9501 liquid pressure activated fuze. It was used on the 20x81 MG151 guns to set fuel tanks of bombers on fire.
Here a picture of the complete cartridge.

 

[khanmak]

Brilliant - thanks!

 

[Nabob]

It is interesting to see the support ring under the driving belt.
I thought they were used on the thinner walled M-Gesch. only.
Bob