M228 Semi-Armor-Piercing High-Penetration

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The M228 Semi-Armor-Piercing High-Penetration (M228 SAP-HP) is a 12.7×40mm round used in the M6 series of sidearms.


The round is somewhat rare and more of an exotic round due to its rarity of use compared to the M225 SAP-HE.[1]

Due to the semi-armor-piercing nature of the round, it is likely coated in a hard metal such as steel but deforms shortly after impact to prevent the bullet from leaving the body and causing accidental casualties. The filler is likely a hard or heavy metal, such as tungsten, which would provide the extra force and penetration this round boasts of. It is possible that such synthetics such as Kevlar are used as well.


In Halo 2 multiplayer, the M228 SAP-HP is drastically underpowered, taking almost 13 rounds to kill a fully shielded Spartan or Elite.


List of appearances[edit]