Thanks to the designer.

$279.00 GST included
The Worker Kunlun Blaster is a spring-powered bolt-action foam dart blaster crafted for players who want sniper styling. it requires minimal assembly — simply connect the front and rear shell halves, mount the top rail.
Its internal core is pre-installed into two reinforced halves, featuring metal components at key stress and seal points for long-term durability. The prime action is smooth and tactile, driven by an all-metal bolt and plunger system, supported by brass thread inserts and rubberized grip and cheek rest padding for confident handling and comfort.
Out of the box, performance lands in the 200 FPS velocity class, with supported spring and barrel setups pushing close to 300 FPS, depending on configuration.
The Kunlun is compatible with both short-dart and standard Talon-style magazines.
A 3D-printed mag release (Bambu/Polymaker PETG HF orange by default) is included for free, as shown in the gallery.
We hope this helps resolve the issue mentioned in the video below, where a standard Talon magazine leaves a large gap between the mag release and the magazine.
Thanks to the designer.

File Location:
https://www.printables.com/model/1211737-worker-kunlun-dual-mag-release
| Combo | FPS | Notes |
|---|---|---|
| 1.4×250 + 450 | ~200–210 | — |
| 1.4×250 + 550 (Stock) | ~200–220 | Baseline |
| 1.6×270 + 450 | ~265–275 | — |
| 1.6×270 + 550 | ~270–285 | — |
| 1.8×270 + 450 | ~285–300 | Available (BlasterTECH) |
| 1.8×270 + 550 | ~300–320 | Available (BlasterTECH) |
Note: Different springs perform best with different barrel lengths. Kunlun is designed around longer barrels (450–550), and shorter barrels are generally not recommended.
Do not upgrade Kunlun with the 1.6×300 Harrier spring, even if you already have them on site. Kunlun uses a 270mm spring system, and BlasterTECH notes the 1.6×300 Harrier spring is not suitable due to spring length and compatibility with Kunlun’s design. (This has not been personally tested, but the rationale appears sound.)
Bolt-action design for controlled, smooth firing cycles
Rigid polymer and alloy construction for stability and long-term durability
Consistent performance using Worker short darts and compatible mags
Modular rail sections for mounting optics, bipods, and accessories
Comfortable stock and ergonomic grip designed for steady aiming
Upgradeable internals — supports stronger springs and metal components
Ideal for long-range, target shooting, and precision builds
Weight: 1550 g
Dimensions: 107 × 28 × 6 cm
Worker Kunlun Blaster in two halves
1.4 × 250 mm spring
1.6 × 270 mm spring
550 mm threaded-breach barrel
Decorative outer barrel sleave
Metal top rail
Metal side rails
6-dart“Kunlun” mag
1 PCAR
Worker iron sight pair
Hardware