Hand grenades, unexploded artillery fragmenting submunitions, and other small anti personnel explosive devices detonated under the vehicle.Ģ0 mm FSP (simulating 155 mm threat) at 520 m/sec from a distance of 100 meters. Protection against all three threats must be provided. So Level 3 armor is probably going to do the job against these extra-heavy sniper rounds when they're employed at long-distance as they're intended to, but if you turn a corner and get pegged at 50 meters then that's just your bad luck, and it's not worth outfitting an entire army with extra protection for this specific kind of case just because it's going to be comparatively rare.7.62×51mm NATO Ball (Ball M80) at 30 meters with velocity 833 m/s ĥ.56×45mm NATO Ball (SS109) at 30 meters with a velocity of 900 m/sĥ.56×45mm NATO Ball (M193) at 30 meters with a velocity of 937 m/s Such rounds have more power behind them, but will have equal or lesser penetrating power when hitting a target at 200, 300, or 400 meters. A Level 3.5 round might have significantly more penetrating power than a level 3 round at 50 meters, but these are intended as larger caliber sniper rounds.

Second, and probably more importantly, rounds larger than Level 3 are really designed to be used at long ranges. 338 Lapua Magnum AP in any great numbers (at least that I know of). First, STANAG is a NATO standard, and potential NATO adversaries don't really buy and field anything like.

However, there are two reasons why a Level 3.5 probably isn't necessary. There are some rounds that would occupy a hypothetical 'Level 3.5,' being both significantly more powerful than Level 3 but not nearly as powerful as Level 4. Level 4 covers heavy machine gun armor-piercing rounds, like. Level 3 covers common heavy armor-piercing rounds like 7.62x51, 7.62x54r.

Level 2 covers common light armor-piercing ammunition like 5.56 and 7.62x39. Level 1 covers light and heavy non-armor piercing ammunition. As a practical matter, there's not a lot of weapons that fall between Level 3 and Level 4.

Nato stanag 4569 nivel 2