Play to your strengths. The four player classes: Assault, Engineer, Support and Recon, each have their specialties, and working together is key to victory. Release Date: October 28, 2011.

Our Battlefield 3 Support Weapons section is full of all the official images and descriptions for each Assault weapon. Under each image you will find a brief description of the weapon, plus weapon characteristics.
Battlefield 3 M27 IAR
Battlefield 3 M27 IAR
This beefed up M416 entered service alongside the M249 in the Marine Corps in 2011. The M27 Infantry Automatic Rifle (IAR) features a heavier, longer barrel and an extended magazine to enable greater amounts of suppressive fire while retaining some of the mobility of a standard M416. The M27 features a bipod by default for supported shooting.

Characteristics
Auto fire: Yes
Single shot fire: Yes
Burst fire: No
Rate of Fire: 750
Ammunition: 45 [5.56x45mm NATO]
Range: Medium