▁American ▁M 1 ▁Gar and ▁but ▁with ▁an ▁integral ▁ 1 0 - round ▁magazine ▁and ▁chamber ed ▁for ▁the ▁Japanese ▁ 7 . 7 × 5 8 mm ▁Ar is aka ▁cart ridge . ▁Where ▁the ▁Gar and ▁used ▁an ▁en - b loc ▁clip , ▁the ▁Type ▁ 4 ' s ▁integral ▁magazine ▁was ▁charged ▁with ▁two ▁ 5 - round ▁stri pper ▁cli ps ▁and ▁the ▁rif le ▁also ▁used ▁Japanese ▁style ▁tang ent ▁s ights . ▁The ▁Type ▁ 4 ▁had ▁been ▁developed ▁alongside ▁several ▁other ▁experimental ▁semi - autom atic ▁rif les . ▁However , ▁none ▁of ▁the ▁rif les ▁entered ▁into ▁service ▁before ▁the ▁end ▁of ▁World ▁War ▁II , ▁with ▁only ▁ 2 5 0 ▁being ▁made ▁and ▁many ▁others ▁were ▁never ▁assemble d . ▁There ▁were ▁several ▁problems ▁with ▁jam ming ▁and ▁feed ▁systems , ▁which ▁also ▁delayed ▁its ▁testing . ▁ ▁Ber etta ▁Mod els ▁ ▁During ▁the ▁ 1 9 5 0 s , ▁Ber etta ▁produced ▁Gar ands ▁in ▁Italy ▁at ▁the ▁beh est ▁of ▁NAT O , ▁by ▁having ▁the ▁tool ing ▁used ▁by ▁Win chester ▁during ▁World ▁War ▁II ▁sh ipped ▁to ▁them ▁by ▁the ▁U . S . ▁government . ▁These ▁rif les ▁were ▁designated ▁Model ▁ 1 9 5 2 ▁in ▁Italy . ▁Using ▁this ▁tool ing , ▁Ber etta ▁developed ▁the ▁B M 5 9 ▁series ▁of ▁rif les . ▁The ▁B M 5 9 , ▁which ▁was ▁essentially ▁a ▁re ch am ber ed ▁ 7