Battlefield 3′s Physical Warfare pack, which was originally an exclusive piece of content to those who pre-ordered Battlefield 3, is now available to download for free on the Xbox Live Marketplace (108KB).
The Physical Warfare pack includes the Type 88 LMG, the DAO-12 shotgun, flechette ammo for the DAO-12, and a flash suppressor for the SKS semi-automatic rifle.
If you want to check it out, head on over to the Xbox Live Marketplace!
UPDATE: The source above seems to be incorrect seeing as how just today (12/16/11) the pack was released for PS3 and they would release it for 360 and PC at a later date. Read on!
NEW UPDATE (12/21/11): The Battlefield blog announced that it is now out for all players and there is no charge!