To unlock the .300 Knockout in Battlefield Hardline's Multiplayer mode you must complete two syndicate assignments. Before those assignments can be even started, a pre-requisite must be met. Below are the pre-requirements and the award requirements for each assignment, along with a few tips and tricks on how to complete them.
- Professional Assignment 2
- 10 Professional specific guns and/or gadgets purchased
- Unlock Professional Gold Service Star 1
The Professional Assignment 2 unlocks the MAC-10. You can read more about that at How to Unlock the MAC-10.
Purchase ten weapons specific to the Professional class. See the Professional class page for a list of all weapons and gadgets available in that class.
Unlock the Professional Gold Service Star. Gold Service Stars are awarded for playing as a specific class, and earning a set amount of points. After earning 10 Bronze and 10 Silver Stars, you will earn the first Gold Service Star.
To get this quickly, play as a Professional in the Hotwire game mode. That's the quickest way to earn cash. See also: How to Earn Cash Fast.
- 200 Sniper Rifle kills
- Unlock the Professional's tier 4 Reputation track in 10 matches
- 15 Camera Coins
- 15 Marksman Coins
Score 200 kills with any Sniper Rifles. This can be done on any game mode. If you're having trouble with bolt action rifles, switch up to semi auto sniper rifles and remove the optic.
Earn the Professional's Tier 4 Reputation Track in 10 different matches. The easiest way to do this is add a Reputation Boost to the Professional class while playing Hotwire. After that, keep playing towards the objective. The reputation tracks will eventually fill up as you earn more points. If you die while filling up a rep track it will reset but already filled rep tracks will stay.
Earn 15 Camera Coins. To get a Camera Coin, the Camera must spot 2 enemies, then they must be killed by a teammate. This must be done in a single game.
The camera can be purchased for $6,000. Set it up near a heavily populated area, or an objective point, and make sure the front is pointing towards the enemies. It will automatically spot all enemies near it for the rest of your team. Get a total of fifteen Camera coins for this assignment.
Earn 15 Marksman Coins. To get a Marksman coin, you must perform a headshot from a distance of 250 meters or more. It's best to play on big, open maps. Perch yourself up on high points. Playing Conquest large is usually a good idea.
How to Unlock the Double-Barrel Shotgun
The AAC Integrally Suppressed Remington 700 is an American sniper rifle manufactured by Remington Arms. It is a modification of the R700 that has an integrally suppressed barrel. It appears in Battlefield Hardline as the .300 Knockout, where it fires the .300 Blackout round.
300 AAC Blackout (7.62x35mm)
3.2 seconds loaded
4.5 seconds empty
|First shot multiplier|
— In-game description
The .300 Knockout is an unlockable weapon for the Professional kit. It is the Professional's Syndicate weapon, requiring the completion of the Professional Syndicate assignment to unlock.
It is distinct from the Professional's other rifles in that it is integrally suppressed, meaning it has a permanently attached Suppressor. This gears it more towards close and medium range engagements, as the suppressor causes a large amount of drop compared to the other rifles. However, it still has very high damage, allowing it to still perform effectively at long range if the player accounts for bullet drop.
Once the gun is obtained, it comes equipped with a FLIR and Laser Sight by default, with the ACOG also unlocked.
In January of 2016, the .300 Knockout was nerfed. But it was different on Consoles and PC. On Console, the bolt action was nerfed. So now, you have to wait almost 2 seconds to rechamber the bullet. On PC, the Knockout, and all other sniper rifles were all nerfed so now, you can't get 1 shot kills or 1 shot headshots. Even with the .338 Magnum Rounds on the AWM and R700 LTR