Koj yuav pom tej yam zoo li IIIA thiab IV thoob plaws peb lub xaib. Cov no qhia txog lub zog nres ntawm cov cuab yeej ua rog. Hauv qab no yog cov npe thiab cov lus piav qhia yooj yim heev.

IIIA = Nres cov mos txwv phom xaiv - Piv txwv li: 9mm & .45
III = Nres cov mos txwv phom xaiv - Piv txwv li: 5.56 & 7.62
IV = Nres cov mos txwv AP (Armor-Tiercing) xaiv - Piv txwv li: .308 & 7.62 API