Outer Barrels
Suppressors
Magazines
Inner Barrels
Hop Up Chambers
Buckings
Gearbox Shells
Drop-In Gearboxes
Mosfets
TRIGGERS
AEG Internals
HPA Parts
Gearbox Service – Custom Installation Packages (Level 1–5)
Gearbox Service – Custom Installation Packages (Level 1–5)
Custom Gearbox Installation Services (Level 1–5)
Select the perfect gearbox service level for your build — from basic maintenance to full CNC gearbox installs. All services are performed by our experienced technicians at Umbrella Armory .EU and include professional-grade precision, tuning, and testing.
Compare All Gearbox Service Levels:
| Level | Name | Scope of Work | Ideal For | Price (EUR) |
|---|---|---|---|---|
| Level 1 | Spring Swap / Basic Maintenance | Spring change, regrease, compression check | Entry-level or minor FPS tuning | €49.99 |
| Level 2 | Core Rebuild | Shim, AOE, compression, up to 3 parts installed | Moderate internal tuning | €89.99 |
| Level 3 | Performance Build | MOSFET + trigger install, up to 5 parts, pre-cocking setup | High-speed or DMR tuning | €149.99 |
| Level 4 | Full Custom Install | Complete rebuild with all internals and tuning | Full kit installs or performance customers | €199.99 |
| Level 5 | CNC Gearbox Full Build | Install into CNC gearbox from scratch with 100% new parts | Custom pro builds & flagship platforms | €249.99–€299.99 |
Note: Pricing does not include parts. This is a labor-only service product. Add-on options such as MOSFET setup or bearing install may be selected at checkout or bundled separately.
About Umbrella Armory
Umbrella Armory is a performance engineering workshop specializing in precision-tuned airsoft rifles and HPA systems. Founded in California and now operating in Austria, Umbrella Armory builds fully optimized replicas for competitive players who demand real ballistic consistency and reliability.
Every rifle is individually assembled, calibrated, and verified under live conditions to deliver perfect shot-to-shot accuracy and efficiency.
Umbrella Armory’s mission is to bring professional-grade performance to serious players worldwide — combining craftsmanship, testing, and innovation for the most consistent airsoft systems in the field.