Get the HVK Binary Stock Kit in Delta Force through Auction House purchases, low-chance Large Weapon Crate drops in Operations, or Armory missions in Warfare.
The attachment is designed for the SR-25, and each mode handles acquisition differently. Decide where you want to use it before committing to a purchase or working through missions. You can then head straight to the relevant menu or container.
When is the HVK Binary Stock Kit available?
The kit arrives with Season 12, Aurora, on PC, mobile, and console. Look for Haavk Military Attachments, the limited-time event that introduces its Operations acquisition routes and Warfare unlock.
Haavk Military Attachments
Choose your route based on the mode you want the kit for and how you want to obtain it:
| Mode | Acquisition route | What to expect |
|---|---|---|
| Operations | Buy at the Auction House | A direct purchase at the listing's displayed price |
| Operations | Search Large Weapon Crates | A low-chance drop during a match |
| Warfare | Complete Armory missions | An unlock earned by completing the kit's objectives |
How to buy the kit at the Auction House
The Auction House is the direct-purchase option in Operations. Choose it if you want to avoid relying on a container drop, then check the listing carefully before paying.
Purchase steps
- Open the Auction House in Operations.
- Locate the HVK Binary Stock Kit listing.
- Check the item name and the price displayed for that listing.
- Buy the kit if the price fits your budget.
Use the current listing price to make your decision. The purchase route lets you obtain the item directly, while the crate route depends on finding it as loot.
Which containers can drop the kit in Operations?
Search Large Weapon Crates for the loot-based acquisition route. These are the containers tied to the kit's event drops, so keep that container name in mind when checking loot during Operations matches.
Large Weapon Crate loot
How to look for a drop
- Enter an Operations match during the event.
- Find and search Large Weapon Crates.
- Check their contents for the HVK Binary Stock Kit and pick it up if it appears.
The kit has a low drop chance. Treat crate searching as an opportunity to find one during your matches, not a guaranteed reward for opening a particular number of containers.
This route makes sense if you are happy to keep looking while playing Operations. If obtaining the attachment is your immediate priority, buying it removes the need to wait for that drop.
How to unlock the kit through Armory missions in Warfare
Warfare sends you to the Armory. Find the HVK Binary Stock Kit there and follow its mission objectives to earn the unlock.
Follow the kit's mission requirements
- Enter Warfare and open the Armory.
- Locate the HVK Binary Stock Kit.
- Read its displayed mission requirements before choosing your loadout.
- Complete the required missions to unlock the attachment.
The event also includes the PKM Bullpup Kit. Check which attachment's requirements you are following before starting a match, especially if your goal is specifically the SR-25 kit.
Build your match plan around the objectives displayed for the HVK kit. Its Armory mission list tells you what you need to complete for the Warfare unlock.
What does the HVK Binary Stock Kit change?
The Aurora patch notes use the longer name HVK Binary Trigger Stock Kit for the SR-25 attachment. Alongside a special firing mode, it changes four weapon stats, with different bonuses in Operations and Warfare.
| Stat or feature | Operations | Warfare |
|---|---|---|
| Control | +8 | +7 |
| Stability | +3 | +2 |
| Accuracy | -12 | -12 |
| Handling | +3 | +2 |
| Special firing mode | Included | Included |
The kit trades accuracy for control, stability, and handling. Operations receives slightly larger bonuses, but the accuracy penalty stays the same in both modes. Consider that trade-off before paying for an Operations copy, particularly if preserving your SR-25's accuracy is a priority.
