Carbine Gearbox Upgrade Kit – 400 FPS | 1.4J | 30 RPS

Carbine Gearbox Upgrade Kit | 400 FPS | 1.4 Joules | 30 RPS

The Carbine Gearbox Upgrade Kit from Umbrella Armory .EU delivers balanced long-range performance with high reliability and exceptional response time. Optimized for outdoor engagements and DMR-style gameplay, this system is tuned to fire at 400 FPS / 1.4J and achieves up to 30 RPS for excellent semi and full-auto control.

Key Features:

• G&G G2 Gearbox Shell – Durable and reinforced
• SHS 13:1 Gearset – Short-stroked and precisely shimmed
• M130 Spring – Tuned for 1.4 Joules / 400 FPS (0.20g BB)
• High Torque Motor – Efficient cycling under high tension
• Full steel rack piston (AOE corrected) + CNC aluminum piston head
• Stainless Steel Cylinder + V2 Cylinder Head for consistent volume
• X-Force M4 Air Nozzle (21.3mm) – Precision air seal
• Perun ETU++ MOSFET Upgrade Kit – Adds active braking, cycle control, pre-cocking
• 8mm Bearings, Spring Guide, Anti-Reversal Latch, Tappet Plate and Selector System – Fully tuned gearbox internals
• 6.03mm Tightbore Inner Barrel with R-Hop – Built for outdoor accuracy

Performance:

• FPS: 390–400 FPS (~1.4J w/ 0.20g)
• Rate of Fire: ~30 RPS on 11.1v LiPo
• Recommended Use: Field / Outdoor / Tactical Builds

Recommended for:

Advanced players and builders who want a durable, long-range AEG gearbox with superior trigger response, ideal for assault or marksman-style platforms.