Impact

Impact is a Weapon Proficiency in Call of Duty: Modern Warfare 3.
==Overview==
This proficiency increases bullet penetration and damage through materials, similar to the perk Deep Impact or the attachment FMJ from previous games.
It can only be equipped on assault rifles, light machine guns, and sniper rifles.402 on twitter: Deeper Bullet Penetration is a weapon proficiency now, not an attachment. Only available on Assault, LMG, and Snipers.
When in use, a puff of gray surrounding a small orb of light can be observed when rounds strike a surface. The attachment can be useful when used with Light Machine Guns, as they already have high wall penetration, so using impact in conjuction allows for nearly double the wall-penetration .
==References==
Category:Call of Duty: Modern Warfare 3 Weapon Proficiencies