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Retro Arms CNC Split Gearbox V2 with int. Hop Up Chamber ULTRA (8mm) - QSC
Features
* CNC machined from aircraft-grade super duralumin (EN AW 7075 T651).
* Strength exceeding steel and unparalleled durability compared to common zinc alloy.
* Two-piece split structure (upper/lower) for dramatically easier maintenance and parts replacement.
* The hop-up chamber is fixed to the upper receiver, maintaining a consistent nozzle-to-chamber relationship independent of the outer barrel.
* Includes the updated Hop Up Chamber ULTRA, allowing for fine adjustments and the use of ROBUST hop-up rubber (compatible with nozzle tips Ξ¦7.2mm or less, base Ξ¦8mm or less. Changed to a duralumin hop adjustment printed dial).
* QSC system allows for spring replacement without disassembling the gearbox.
* Compatible with Tokyo Marui standards and electronic trigger units from major manufacturers such as GATE.
Included Accessories
* CNC Split Gearbox V2 (8mm) Main Body
* Mounting Screw Set
* QSC Spring Guide
* CNC Hop Up Chamber AR15 ULTRA
Improvements
* Added grooves to prevent various springs, such as the tappet plate and trigger switch, from falling out.
* Dedicated hole for confirming pre-cocking adjustment.
* Expanded wiring space (supports up to 2.5mm diameter) and protective edges to prevent wiring damage from the motor.
* Significantly increased wall thickness around the cylinder head, which experiences high loads, dramatically improving durability.
* Dedicated hole to release the anti-reverse latch from the outside.
* Other improvements to assembly accuracy through dimension optimization and chamfering of various parts.
Notes
* Compatibility issues may arise due to dimensional differences, and specialized knowledge, experience, and skills are required for installation. Please seek support from a shop or similar.
* Due to anodizing, the color may vary between batches and differ from the product image. Please check in advance if you are concerned.
* Do not apply excessive force during installation (recommended screw tightening torque is 1Nm or less).
* MAXX cylinder heads cannot be used.
Daily Cleaning: Use a soft brush or damp cloth to gently wipe away dirt. Avoid harsh chemicals. For mesh areas, use diluted mild detergent and a soft brush.
Drying: Air dry in a cool, shaded place after cleaning. Avoid direct sunlight or high heat, which can cause fading and glue deterioration.
Storage: Stuff with paper to maintain shape when not in use. Store in a dry, ventilated area to prevent mold. Rotate between multiple pairs to extend lifespan.
Usage Notes: Designed for basketball. Not recommended for hiking, long-distance running, or other specialized sports where different performance features are required.
Good value for the price. The item works as expected and there have been no issues during use. Everything seems to function properly.