Primer cartridge??

[Nismosonic]

Given this last week, looks to be some type of primer cartridge, marked RG L1A4 81 UP
base is very heavy, that’s why I think it’s a primer.
anyone help??

 

[LCplCombat]

It's a Tube, Vent, Electric. TVE

 

[glevum]

for the British Army 120mm tank gun, fitted to Chieftan and possibly Challenger.

 

[ron3350]

This is the tin for L3A1 vent tubes .625". Aluminium base and brassy steel lid.

Two vent tubes L1A4. The new case shows the threaded primer pocket.

 

[Depotman]

Given this last week, looks to be some type of primer cartridge, marked RG L1A4 81 UP
base is very heavy, that’s why I think it’s a primer.
anyone help??

There are two different sizes, one for the 120mm Tank gun and the other smaller one unknown! Depotman