Bullets going through walls has never been a problem for me without FMJ. So...I don't use it.

It does the tiniest bit more damage but apart from that I dont think it has any special effects

It goes though riot shields, what more do you need?

It does more damage.

It shouldn't do any more damage. The only thing it should do is reduce the amount of damage taken away by passing through a surface. (It reduces the reduction. That's not confusing. :p)

Oh man, it goes through riot shields? I didn't realize this, here I thought it was a little useless when I unlocked it a few days ago. 

" It goes though riot shields, what more do you need? "

I only use it because I want the extended mags.

I use a riot shield 60-70 percent of the time. It most certainly does NOT go through riot shields.

Aw man, I'm like 5 kills away from it with the Scar and here I was thinking it was something useful like extra stopping power or something.

" I only use it because I want the extended mags. "

It's the only upgrade I need to finish. Get 40 kills through walls/blockades with FMJ, but its so annoying. I dont shoot random stuff/blindly, and if I see someone behind a wall, Im gonna shoot the head or foot or whatevers popping out. Im like 28/40, and I can safely say its useles. Im just waiting to get the final upgrade.

"It goes though riot shields, what more do you need? "

" @Jeffsekai said:

"It goes though riot shields, what more do you need? "

WHAT! Now i want to use it. Wait, someone says your lieing to me. "

 Just in case anyone still does not believe that FMJ will not go through shields I made a video. It's some of the most popular guns in MP being fired at a shield using FMJ.

Never found a use for extended mags. In my opinion, FMJ bullets are decent, but mags are useless.

FMJ lets you shoot through walls like paper. It's not that bad.

I use the FMJ on my secondary machine pistol. Trying to get it for my SCAR so I can eventually master it. It does indeed lead to kills through walls faster.

The inclusion of FMJ really makes me wish they had white phosphorous rounds, and a WP spree.

I've been working on getting the extended mags for the SCAR. FMJ on that gun seems pretty pointless. It's taking quite a while (especially compared to how long it took me to get extended mags for the RPD). With such a short clip, firing bullets through walls/cover for more than 1 or 2 finishing bullets is a complete waste.
 
However, I use FMJ on my RPD all the time now. Definitely makes a difference. It really feels to me like even in the open, they drop the other guy just a hair faster. If you played COD4 with the RPD a lot, then you need FMJ rounds just to make the gun feel right and still have the bullet penetration.

It's basically Deep Impact from COD4, plus a little bit of damage.

FMJ is fairly useless this time around compare to COD4 with Deep Impact. Its only good if you are certain that somebody is hiding behind cover, like you literally see them run for cover. You kill them a bit faster this way than waiting for their head to pop up.

" @Infininja: Well it would make sense that it does a little more damage given that it's supposedly piercing body armor. "

" FMJ is fairly useless this time around compare to COD4 with Deep Impact. Its only good if you are certain that somebody is hiding behind cover, like you literally see them run for cover. You kill them a bit faster this way than waiting for their head to pop up. "

Full Metal Joker?

I know wikis are a bad source of reliable information, but this plainly states it does not do extra damage.

I think Infinity Ward's naming convention just isn't right. There is nothing that has indicated it does more damage. FMJ's purpose in MW2 is to allow better penetration through surfaces (it does this by reducing the damage reduction the surface would normally take).

" @Infininja said:

I think Infinity Ward's naming convention just isn't right. There is nothing that has indicated it does more damage. FMJ's purpose in MW2 is to allow better penetration through surfaces (it does this by reducing the damage reduction the surface would normally take).

Actually, when you select FMJ as an attachment, the damage meter goes up slightly. So if that table is correct, there is a slight damage increase. Maybe they just have a funny way of representing the value of FMJ. "

if your a wall spammer like me its pretty handy. It's the difference between a kill or not when some fucker runs behind something while your shooting at him.

" @Infininja: Let me reword my statement. FMJ is more useless in a sense that there are more attractive attachments to add onto your gun than FMJ. In COD4 there were like 4 perks to choose from for the 3rd tier perk (Martyrdom, steady aim, deep impact and dead silence). A majority of players would choose either deep impact or steady aim. But now its an attachment, and there are many useful attachments that players would rather use. "

I was told awhile back that FMJ was better at penetration and gave off very light splash damage. Not sure if that remained the case in the final game or not.

It does give better wall penetration and overall damage, so paired up with stopping power it makes some guns pretty lethal.

I'm more basing it off of individual experience with the FAMAS with and without FMJ. It's seems like a very slight damage increase, but then again it's all very dependent on situation.

" @Jeffsekai said:

" It goes though riot shields, what more do you need? "

Sorry but no it doesn't. I'm not sure where that statement was said but it definitely does not go through riot shields. "