▁is ▁B erd an ▁or ▁box er ▁( in ▁large ▁rif le ▁size ). ▁ ▁According ▁to ▁the ▁official ▁Commission ▁Intern ationale ▁P erman ente ▁pour ▁l ' E pre uve ▁des ▁Ar mes ▁à ▁Fe u ▁Port atives ▁( C . I . P .) ▁ ▁r ul ings , ▁the ▁ 7 . 9 2 × 3 3 mm ▁Kurz ▁can ▁handle ▁up ▁to ▁ ▁P max ▁pie zo ▁pressure . ▁In ▁C . I . P . ▁reg ulated ▁countries ▁every ▁rif le - cart ridge ▁combination ▁has ▁to ▁be ▁proof ed ▁at ▁ 1 2 5 % ▁of ▁this ▁maximum ▁C . I . P . ▁pressure ▁to ▁cert ify ▁for ▁sale ▁to ▁consum ers . ▁This ▁means ▁that ▁ 7 . 9 2 × 3 3 mm ▁Kurz ▁chamber ed ▁arms ▁in ▁C . I . P . ▁reg ulated ▁countries ▁were , ▁as ▁of ▁ 2 0 1 4 , ▁proof ▁tested ▁at ▁ ▁P E ▁pie zo ▁pressure . ▁ ▁Military ▁design ation ▁ ▁In ▁German ▁military ▁instructions , ▁the ▁cal iber ▁was ▁often ▁de emed ▁un important ; ▁the ▁name ▁was ▁emphas ized . ▁The ▁ 7 . 9 2 × 3 3 mm ▁Kurz ▁was ▁referred ▁to ▁as ▁the ▁ ▁( p istol ▁cart ridge ▁model ▁ 1 9 4 3 ) ▁or ▁ ▁( p istol ▁am mun ition ▁model ▁ 1 9 4 3 ). ▁This ▁was ▁part ▁of ▁the ▁same ▁dup licity ▁under ▁which ▁the ▁St G 4 4 ▁was ▁originally