If you mean the 12.7x99 cartridge, also known as the .50 BMG, and fired by weapons such as the Browning M2 machine gun and Barret sniper rifles, no.
Yes, a 5.56mm round can potentially pierce certain types of body armor, particularly older or lower-level vests designed to stop handgun rounds. Armor rated at Level IIA, II, or IIIA may not be sufficient against high-velocity rounds like the 5.56, especially if they are armor-piercing types. However, higher-level body armor, such as Level III or IV, is specifically designed to withstand rifle rounds and would generally provide protection against the 5.56.
a 50 cal sniper Standard body armor without any extra insert plates is generally rated as Type IIIA or less. This type of armor cannot withstand any real rifle bullet. At best, it can stop submachineguns and high-powered pistol round. Type III and IV armors usually have some sort of ballistic ceramic plate inserts. These inserts can stop a single (under ideal conditions 2-3) bullets per plate of up to 7.62mm Armor Piercing.
it can not stop bullets so why wear it?
Police officers only have to wear body armor if they are required to by their local police chief. Thus, their isn't a specific type that does not have to - it varies according to district. Although, it's worth noting that the majority dowear body armor even if it's not required. The armor may be a bit uncomfortable, but it could stop that deadly bullet.
No. Those are designed to stop rounds in the 30 caliber range (e.g., 7.62x51 or 7.62x54R). .50 will go right through them and keep on going.
Hard body armor rated at least to NIJ level III.
Under most circumstances, no. The .50 cal BMG was designed to shoot through early armored VEHICLES. A flak jacket- properly called soft body armor, is intended to stop fragments from grenades, mortars, and artillery shells- not bullets. Especially not BIG, HEAVY bullets like the .50.
The best free online armor product is the "Online Armor Free". Its key features are to stop hackers, stop malicious programs and to protect one's identity online.
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No.
Very simple. Bullets and gunpowder changed war and made armor usless.
This depends on the particular caliber, weight, velocity, and construction of the bullet and the "Threat Level" of the body armor. No vest is bullet proof -- the preferred term is body armor.Generally speaking hollow points are much lesslikely to penetrate body armor which will stop non-hollowpoints bullets of the same caliber, weight, and velocity.