▁Board ▁ordered ▁a ▁. 3 0 - 0 6 ▁Gar and ▁variant . ▁In ▁March ▁ 1 9 2 7 , ▁the ▁caval ry ▁board ▁reported ▁tri als ▁among ▁the ▁Thompson , ▁Gar and , ▁and ▁ 0 3 ▁Spring field ▁had ▁not ▁led ▁to ▁a ▁clear ▁winner . ▁This ▁led ▁to ▁a ▁gas - oper ated ▁. 2 7 6 ▁( 7   mm ) ▁model ▁( pat ented ▁by ▁Gar and ▁on ▁ 1 2 ▁April ▁ 1 9 3 0 ). ▁ ▁In ▁early ▁ 1 9 2 8 , ▁both ▁the ▁inf antry ▁and ▁caval ry ▁bo ards ▁ran ▁tri als ▁with ▁the ▁. 2 7 6 ▁Ped ers en ▁T 1 ▁rif le , ▁calling ▁it ▁" high ly ▁prom ising " ▁( des p ite ▁its ▁use ▁of ▁w ax ed ▁am mun ition , ▁shared ▁by ▁the ▁Thompson ). ▁On ▁ 1 3 ▁August ▁ 1 9 2 8 , ▁a ▁sem ia ut om atic ▁rif le ▁board ▁( SR B ) ▁carried ▁out ▁joint ▁Army , ▁Navy , ▁and ▁Marine ▁Corps ▁tri als ▁between ▁the ▁. 3 0 ▁Thompson , ▁both ▁caval ry ▁and ▁inf antry ▁versions ▁of ▁the ▁T 1 ▁Ped ers en , ▁" M 1 9 2 4 " ▁Gar and , ▁and ▁. 2 5 6 ▁Bang , ▁and ▁on ▁ 2 1 ▁September , ▁the ▁board ▁reported ▁no ▁clear ▁winner . ▁The ▁. 3 0 ▁Gar and , ▁however , ▁was ▁dropped ▁in ▁favor ▁of ▁the ▁. 2 7