MW2 Weapon Attachments, Equipment and Rank Unlocks

Need to know what you have to do to rank up or whatever to unlock that perfect attachment for your favorite gun?

Here's the full lowdown on all the gun attachments for your weapons, including rank to unlock and also other equipment and unlocks for them.

First a list of all the attachments, such as the heartbeat sensor, and how to get them, and then the full list of available equipment like C4 and Claymores.

Weapon Attachments
Grenade Launcher - Complete Marksman I (10 kills with weapon)
Red Dot Sight - Marksman II (25 kills)
Silencer - Marksman III (75 kills)
ACOG Scope - Marksman IV (150 kills)
FMJ (Full Metal Jacket) - Marksman V (300 kills)
Shotgun Attachment - 20 kills with attached Grenade Launcher
Holographic Site - 60 kills using (aiming through) the Red Dot Sight
Heartbeat Sensor - 15 kills with Silencer attached
Thermal Scope - 20 kills aiming through the ACOG scope.
Extended Mags - 40 bullet penetration kills with FMJ option selected

Equipment
Frag Grenades - available standard
Semtex - Basically a sticky frag, available standard.
Throwing Knives - can also pick up after throwing. Unlocked at level 7.
Tactical Insertion - throw a flare to be your new respawn point. Unlocked at level 11.
Blast Shield - unlocks at level 19
Claymores - unlocked at level 31
C4 - Unlocked at Level 43

Time to get ranking and unlocking - see you on the battlefield.