Swiss Rifle Grenade ?

[ron3350]

Can somebody tell me the type of rifle grenade shown. A similar photo was shown back in 23 March 2008 by Ammodillo but did not say the model or if it is a practice grenade. Dimensions approx. 78mm diameter and 505mm long.
Print on tail is: 592-5114. 396- 82T. I think it is Swiss?

 

[MINENAZ16]

Hello,

Gw UG 58 (Gewehr Übungsgranate 58 mit Zusatztreibladung ohne Zapfen)
= swiss practice rifle grenade with additional propulsion charge (inert head)

Regards

 

[ron3350]

Thank you. I just got this from a collection and found no info on the net.