Hebrew to English Other History memoirs of a partisan

The narrator has survived the first massacres in the town and is planning to join the partisans. He and a friend are going around and buying all kinds of weapons to take with them into the forest with the partisans.

דפקנו על דלת ביתו של איכר עני וקנינו אצלו ׳אובריז׳, כלומר רובה קצוץ־קנה ואקדח

Does anyone know what ׳אובריז׳ refers to?

Thanks