Umbral ATM Gearbox Steel Metal Gears Set
Take your ATM gel blaster to the next level with the Umbral® ATM Steel Gear Set. Designed and engineered by STARIVER®, this professional-grade gear set delivers exceptional durability, precision, and performance for serious gel blaster enthusiasts.
Crafted from high-strength steel using full CNC machining, these gears feature a Rockwell hardness of 40–45 HRC — built to withstand the stress of high-power setups while maintaining smooth, reliable operation.
Key Upgrades & Performance Benefits
- Precision Magnet Position Correction Optimized fire control sensor placement solves single-shot reset issues and raises your rate-of-fire limit.
- Water-Drop Tooth Position Correction Improved piston release timing and better piston-to-BOLT fit for superior initial velocity consistency.
- CNC Spiral Bevel & Crown Gears Combines the quietness and high-torque advantages of spiral teeth with straight-tooth vertical meshing for perfect compatibility.
- Dynamic Balance Calibration Significantly reduces centrifugal force during high-speed rotation, lowering vibration and dramatically extending gearbox shaft life.
- High-Power Spring Compatible Rated for springs up to M180, making it ideal for high-performance builds.
Product Specifications
| Feature | Details |
|---|---|
| Brand | Umbral® (by STARIVER®) |
| Material | High-strength Steel |
| Hardness | 40–45 HRC |
| Manufacturing | Full CNC Machined |
| Gear Type | Spiral + Straight Hybrid |
| Max Spring | M180 |
| Set Includes | 4-Piece Complete Gear Set |
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Specifications:
Brand: stariver.
Material: stainless steel.
Color: black.
Compatibility: atm gearboxes.
Package includes: 1* set of atm gearbox metal gears.
Original: $43.99
-65%$43.99
$15.40
Description
Take your ATM gel blaster to the next level with the Umbral® ATM Steel Gear Set. Designed and engineered by STARIVER®, this professional-grade gear set delivers exceptional durability, precision, and performance for serious gel blaster enthusiasts.
Crafted from high-strength steel using full CNC machining, these gears feature a Rockwell hardness of 40–45 HRC — built to withstand the stress of high-power setups while maintaining smooth, reliable operation.
Key Upgrades & Performance Benefits
- Precision Magnet Position Correction Optimized fire control sensor placement solves single-shot reset issues and raises your rate-of-fire limit.
- Water-Drop Tooth Position Correction Improved piston release timing and better piston-to-BOLT fit for superior initial velocity consistency.
- CNC Spiral Bevel & Crown Gears Combines the quietness and high-torque advantages of spiral teeth with straight-tooth vertical meshing for perfect compatibility.
- Dynamic Balance Calibration Significantly reduces centrifugal force during high-speed rotation, lowering vibration and dramatically extending gearbox shaft life.
- High-Power Spring Compatible Rated for springs up to M180, making it ideal for high-performance builds.
Product Specifications
| Feature | Details |
|---|---|
| Brand | Umbral® (by STARIVER®) |
| Material | High-strength Steel |
| Hardness | 40–45 HRC |
| Manufacturing | Full CNC Machined |
| Gear Type | Spiral + Straight Hybrid |
| Max Spring | M180 |
| Set Includes | 4-Piece Complete Gear Set |
Â
Specifications:
Brand: stariver.
Material: stainless steel.
Color: black.
Compatibility: atm gearboxes.
Package includes: 1* set of atm gearbox metal gears.
