The Effects of 7.62x39 and 5.56x45 Rounds on Level IV Armor Plates

When discussing the adequacy of ammunition to penetrate modern body armor, the 7.62x39 and 5.56x45 rounds stand out, particularly in the context of Level IV armor. This article explores the impact of these rounds on Level IV plates and the number of hits required to completely put a soldier out of combat.

Understanding Level IV Armor

Level IV armor, also known as Protective Anti-Penetrator (PAP) armor, is designed to defeat one 7.62 x 39 round per plate. This type of armor is highly effective, but not infallible. Some brands of Level IV armor can even resist a follow-up hit to the same plate, albeit not the exact same spot. However, the armor will still cause significant damage. If the third round hits the same plate, it is likely to penetrate.

Penetration Rates for 7.62x39 Rounds

Given the effectiveness of Level IV armor, the number of 7.62x39 rounds needed to penetrate it is a matter of scrutiny. The answer lies between 1 and 4 rounds, depending on the proximity of each hit and the condition of the armor plate. A first impact will result in significant damage from bruising and potential internal injuries. A second round, if close enough to the first, could cause further damage, possibly even penetration. The third round, hitting the same plate, will cause deep bruising, broken ribs, and a sternum injury comparable to a severe car accident. The soldier will survive but will be out of the fight for an extended period.

Penetration Rates for 5.56x45 Rounds

While the 5.56x45 rounds may not penetrate Level IV armor as easily as 7.62x39 rounds, they are also capable of causing substantial damage, albeit not as severe. Up to 6 rounds may be required to ensure penetration, even against a highly resilient soldier like 'Rambo.' Each additional round increases the likelihood of penetration, but the damage is less severe compared to 7.62x39 rounds.

Conclusion: Degrees of Impact

While the precise number of rounds required depends on the specific conditions, such as the pain threshold of the soldier and the condition of the armor plate, it is clear that multiple impacts can significantly reduce a soldier's combat effectiveness. In most cases, a few well-placed 7.62x39 rounds or several 5.56x45 rounds will render a soldier incapacitated, even with Level IV armor. The use of additional rounds increases the chances of achieving this outcome, but the nature and severity of the injuries change accordingly.