The Spanish munitions company Instalaza made two models of rifle grenade during the 1960s. As well as being used by the Spanish Army, the Portuguese Army also used them in the colonial wars that took place in its colonies in Africa.

The Type I could penetrate 250 mm (9.8 in) of armour, whereas the lighter Type II could penetrate 150 mm (5.9 in) of armour.^[1]

Each was propelled by being mounted atop a rifle's 22 mm grenade launching adapter, and being launched by a ballistite (blank) cartridge.

The Type II was enhanced further, with a bullet trap to accept 5.56×45mm NATO.

A further development led to the Type V and is known as the FTV.^[2]

•  Spain: Spanish Army
•  Portugal: Portuguese Army

• 
  Instalaza grenade and other rifle grenades as encountered during the South African border war in Angola and Namibia
• 
  Instalaza rifle grenades on display at the military museum, Valencia

• Article (in Spanish) with reference to the Instalaza rifle grenades
• "Spanish Instalaza M.61 Rifle Grenade". 3D models, intended for entertainment or decorative purposes only. Retrieved 5 August 2024 – via cults 3d printing.