HAMMERHEAD
Fully Modular Foam Dart Platform
Description
The Hammerhead is a modular foam dart platform built for experimentation, durability, and straightforward assembly. Its standardized architecture allows every component to be swapped, tuned, and upgraded while maintaining reliable alignment and compatibility. The system is designed for rapid iteration, letting builders change plunger tubes, barrels, and springs quickly without altering the core structure.
Full Modularity Hardware Kit
| Part | McMaster # / Link | Qty required |
|---|---|---|
| 4-40 3/8″ FH (steel) | 90273A108 | 24 |
| 4-40 1″ FH (steel) | 90273A115 | 12 |
| 10-32 3/4″ FH (steel) | 90273A831 | 9 |
| 10-32 1.25″ BH (steel) | 91440A516 | 12 |
| 10-32 1.75″ BH | 90279A837 | 6 |
| 10-32 3″ BH | 91440A637 | 6 |
| 10-32 1/8″ thick nut | 90480A195 | 24 |
| 10-32 Flange nut | 90389A113 | 6 |
| 10-32 threaded rod (3ft) | 98838A011 | 129 inches total |
| Catch Washer | 7421K12 | 1 |
| 1.5″ OD washer | 92141A035 | 1 |
| Anchor Washer | 92908A140 | 1 |
| 3″ Spacer (steel) | 93265A034 | 6 |
| 9″ Connecting Rod (zinc-plated) | 6516K6 | 2 |
| 1″ Spacer | 93330A476 | 3 |
| Small Spring (3/4″) (36″ ×5) | 9662K16 | 9 |
| Magnet Spring | 9434K133 | 1 |
| K26 (11″) (5.5″ piece) | 9637K26 | 1 |
| K25 (11″) (5.5″ piece) | 9637K25 | 1 |
| Magnet 1″ OD | Amazon link | 1 |
| 1.375″ ID Plunger Tube (3ft) | 53945K21 | 5 |
| Alum tube 0.509″ ID (3ft) | 9390N15 | 21 |
| Press Insert for plastic | 92395A112 | 6 |
| 1.375″ OD O-RING | 9452K87 | 6 |
| 0.5″ OD O-RING FAT | 9452K18 | 6 |
| 0.5″ OD O-RING | 9452K21 | 6 |
Key Features
- Modular architecture with interchangeable components
- Rapid configuration and tuning of plunger tubes, barrels, springs, and layouts
- Full-Metal Catch system and durable steel components
- STL files pre-oriented for support-free printing and quick assembly
What’s in the Box (Example Contents)
- 2 × 9″ steel spacers and 6 × 3″ steel spacers
- 3 × 1″ aluminum spacers
- 10.75 ft of 10-32 threaded rod in multiple lengths
- 7″ and 14″ 0.509″ ID aluminum barrels
- 50 lb pull strength magnet
- K25 and K26 5.5″ springs, plus tuning springs
- 30 nuts, 3 washers, 69 screws, 18 O-rings, 6 threaded inserts
What’s New in 2.3
- Expanded modular interface standards
- Improved internal airflow with bivalve turnaround design
- Support for 1.0″ ID plunger tubes via Bonnethead variant
- Performance range of 150–210 FPS depending on tuning
- Reinforced trigger orientation for long-term durability
System Features
- Modular grip and magwell system for multiple ergonomic layouts
- Large and growing attachment library
- Dry-fire friendly and impact resistant
- Assembly-friendly with basic tools
Forward Compatibility
Upcoming Zeroworx blasters share the same ecosystem for continued cross-compatibility. E-files and hardware kits are available separately.
Performance and Tuning Notes
- Typical performance range: 150–210 FPS depending on spring and barrel
- Shorter barrels optimized for low power springs; longer barrels favor peak velocity
- Try not to overtighten the frame, can cause misalignment of the sliding components
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