Fredrik Thylander, Senior Designer at DICE has revealed that there will be exclusive multiplayer weapons available only by completing the Co-Op mode first. He revealed on twitter:
The EBR is a modified and accurized version of the M14 rifle built and utilized solely by the United States Marine Corps (USMC). It is based on the current United States Marine Corps Designated Marksman Rifle (DMR). When asked if the guns would be available via alternative methods he replied:
Personally I 100% support unlocks through game progression. Rewarding players that take the time to progress through game modes is much better than forcing weapon purchases through DLC.
Recommended Battlefield Links: