What is the Full Metal Jacket in Black Ops 2?

Full Metal Jacket - Call of Duty: Black Ops 2: Full Metal Jacket (FMJ) rounds is a weapon Attachment that increases penetration through surfaces and damage to Scorestreak Rewards. read more

Full Metal Jacket (FMJ) rounds is a weapon Attachment that increases penetration through surfaces and damage to Scorestreak Rewards. The weapons may not be stronger against other soldiers straight on, but the damage is much stronger while fighting through surfaces. read more

If you are just shooting at someone then no it does not help with damage. If you shoot and enemy through a wall it will take less shots to kill them. And you can shot through thicker surfaces plus destroy score streaks faster. read more