For the support classes in Battlefield 3, a variety of popular sub-machine guns (SMGs) and carbines will be available, and it’s expected to be based on popular guns in previous Battlefield games.
UMP-45


The German made UMP-45, short for “Universal Machine Pistol”, is a widely used sub-machine gun in the world, and is popular among police and anti-terror forces. It’s been a popular SMG in various Battlefield games and will return in Battlefield 3.
AKS 74U


The AKS 74U, based on the AK-47 with a shorter barrel and lighter construction, is the main carbine for the Russian special forces. It was featured in BF2 and two Bad Company games, and will reappear in Battlefield 3 as the main carbine of the Russian/Middle East forces.
FN SCAR-L


The FN SCAR-L is a silenced, fully automatic carbine rifle first introduced in the Special Forces expansion for Battlefield 2, and has since appeared in two bad Company games. The gun is expected to make a return in Battlefield 3 as an unlock.
UZI


The Israeli made, popular SMG is used around the world, both among law enforcement and criminals. It was introduced in 1950 and has been in use ever since. It has been featured as an unlock in several Battlefield games, a role it’s set to reprise in Battlefield 3.
FN P90


The FN P90 was introduced in 1990 and is a popular submachine gun among special forces and anti-terrorism groups. It is used throughout the world in armies, police and SWAT forces. The FN P90 was previously featured in Battlefield 3, and will return in Battlefield 3.
MP7


The Heckler & Koch MP7 is a personal defense weapon with a new and more powerful 4.6x30mm cartridge designed to penetrate body armor. The MP7 was developed by HK and officially entered service in 2001. It has entered service in limited use among a few countries in the world, including Norway and England. The MP7 was first featured in Battlefield 2 and will return in Battlefield 3.
M4 Carbine


The M4 carbine was introduced in 1997 and is a smaller, lighter version of the M16A2. The M4 is widely used among armies in the Western World, including the US, UK, Canada, and others. The M4 was first featured in Battlefield 2, and will return as an unlock in Battlefield 3.
A-91


The A-91 is a Russian-made bullpup-style carbine rifle with an integrated 40mm grenade launcher. It’s still in the testing stages in use at various Russian armed forces. It’s the first the time the A-91 will be featured in a Battlefield game with Battlefield 3.
PP2000


The PP2000 is a Russian-made submachine gun designed for close quarter combat for police and special forces. It was featured in Battlefield Bad Company 2 and will return in Battlefield 3.