on et ▁lug . ▁A ▁T 3 7 ▁flash ▁h ider ▁was ▁developed ▁later . ▁Flash ▁h iders ▁were ▁of ▁limited ▁utility ▁during ▁low - light ▁conditions ▁around ▁dawn ▁and ▁d usk , ▁but ▁were ▁often ▁removed ▁as ▁potentially ▁det r iment al ▁to ▁accuracy . ▁ ▁T ank er ▁models ▁Two ▁interesting ▁variants , ▁meant ▁for ▁tank ▁cre ws , ▁that ▁never ▁saw ▁service ▁were ▁the ▁M 1 E 5 ▁and ▁T 2 6 ▁( pop ular ly ▁known ▁as ▁the ▁T ank er ▁Gar and ). ▁The ▁M 1 E 5 ▁is ▁equ ipped ▁with ▁a ▁shorter ▁ 1 8 - inch ▁( 4 5 7   mm ) ▁bar rel ▁and ▁a ▁fol ding ▁but t stock , ▁while ▁the ▁T 2 6 ▁uses ▁a ▁shorter ▁ 1 8 - inch ▁( 4 5 7   mm ) ▁bar rel ▁and ▁a ▁standard ▁but t stock . ▁The ▁T ank er ▁name ▁was ▁also ▁used ▁after ▁the ▁war ▁as ▁a ▁market ing ▁g imm ick ▁for ▁commer cially ▁modified ▁Gar ands . ▁ ▁The ▁T 2 6 ▁arose ▁from ▁requests ▁by ▁various ▁Army ▁combat ▁commands ▁for ▁a ▁short ened ▁version ▁of ▁the ▁standard ▁M 1 ▁rif le ▁for ▁use ▁in ▁j ung le ▁or ▁mobile ▁war fare . ▁In ▁July ▁ 1 9 4 5 ▁Col . ▁William ▁Alexander , ▁former ▁staff ▁officer ▁for ▁Gen . ▁Simon ▁Buck ner ▁and ▁a ▁new ▁member ▁of ▁the ▁Pacific ▁War fare ▁Board , ▁requested ▁ur gent ▁production ▁of ▁ 1 5 , 0