9 ▁rif le ▁convers ions . ▁The ▁ 2 0 ▁round ▁steel ▁mag az ines ▁are ▁propriet ary ▁but ▁were ▁made ▁to ▁share ▁the ▁magazine ▁loading ▁char ger ▁with ▁the ▁F N ▁F AL ▁rif le ▁used ▁by ▁the ▁Argent ine ▁Army . ▁ ▁These ▁charg ers ▁are ▁the ▁same ▁as ▁for ▁the ▁M aus er ▁Kar - 9 8 k , ▁and ▁thus ▁not ▁inter change able ▁with ▁standard ▁NAT O ▁stri pper ▁cli ps . ▁ ▁These ▁are ▁very ▁in exp ensive ▁via ▁sur plus ▁deal ers . ▁ ▁Not ▁only ▁are ▁M aus er ▁ 9 8 ▁stri pper ▁cli ps ▁not ▁inter change able ▁with ▁ 7 . 6 2 × 5 1 mm ▁NAT O ▁standard , ▁but ▁also ▁not ▁with ▁old ▁ 7 . 6 5 × 5 3 mm ▁Argent ine ▁versions . ▁ ▁A ▁very ▁small ▁number ▁were ▁later ▁used ▁in ▁the ▁F alk lands ▁War ▁as ▁sni per ▁rif les ▁by ▁the ▁Argent ini ans . ▁ ▁Sur plus ▁Argent ine ▁rif les ▁function ▁quite ▁well , ▁but ▁many ▁imported ▁mag az ines ▁were ▁poor ly ▁cut ▁down ▁to ▁ 1 0 ▁r ounds ▁due ▁to ▁US ▁import ▁restrictions . ▁ ▁Some ▁US ▁collect ors ▁have ▁been ▁able ▁to ▁modify ▁B AR ▁ 1 9 1 8 ▁and ▁M G 1 3 ▁mag az ines ▁to ▁fit ▁the ▁original ▁cal iber ▁rif les , ▁however ▁the ▁quality ▁var ies ▁heavily ▁with ▁these ▁mag ▁convers ions ▁with ▁some ▁simply ▁being ▁extended ▁internal ▁mag az ines