▁tested ▁and ▁used ▁in ▁prototype ▁rif les ▁in ▁Argentina ▁and ▁Belg ium , ▁amongst ▁other ▁nations , ▁during ▁the ▁late ▁ 1 9 4 0 s ▁and ▁early ▁ 1 9 5 0 s . ▁The ▁first ▁F N ▁F AL ▁prototype ▁was ▁designed ▁to ▁fire ▁the ▁cart ridge ▁when ▁NAT O ▁was ▁organized . ▁After ▁the ▁war ▁it ▁was ▁manufact ured ▁by ▁East ▁Germany ▁( the ▁German ▁Democratic ▁Republic ), ▁the ▁Czech oslov ak ▁Social ist ▁Republic , ▁and ▁Egypt . ▁ ▁Spain ▁continued ▁development ▁after ▁the ▁war , ▁creating ▁a ▁few ▁variants ▁of ▁the ▁cart ridge , ▁such ▁as ▁trac er ▁r ounds , ▁boat - ta iled ▁r ounds ▁and ▁slightly ▁shorter ▁bul lets ▁that ▁have ▁a ▁lead ▁core . ▁These ▁develop ments ▁were ▁encourag ed ▁by ▁Cal z ada ▁Bay o , ▁a ▁Spanish ▁lieutenant ▁colon el . ▁However , ▁they ▁were ▁cancel led ▁in ▁favour ▁of ▁a ▁more ▁radical ▁cart ridge , ▁ 7 . 9 2 × 4 0 mm ▁C ET ME . ▁Finally , ▁Spanish ▁C ET ME ▁rif les ▁were ▁chamber ed ▁for ▁a ▁variant ▁of ▁the ▁ 7 . 6 2 × 5 1 mm ▁NAT O ▁round . ▁ ▁Dem and ▁for ▁the ▁am mun ition ▁still ▁exists , ▁as ▁the ▁St G ▁ 4 4 ▁is ▁still ▁in ▁use ▁by ▁some ▁within ▁the ▁Leb an ese ▁Forces ▁milit ia , ▁Dj ib out i ▁and ▁Pakistan ▁ ▁as ▁well ▁as ▁irregular ▁forces ▁in ▁some ▁countries ▁in ▁the ▁Horn ▁of ▁Africa ▁and