paraguayan recoilless rifle m3 stuart

From what I understand, the Paraguayan M3 Stuart tanks were purchased and upgraded versions manufactured in Brazil.

Regarding the recoilless rifle version, I assume they weren't used formally but were displayed for parades.

(This is my understanding; if you have more precise information, please share it.)

106mm M40A1 Recoilless Rifle (15mm / 20mm / 28mm)
by Bob_Mack
(I can"t put it in remix.)