Retro Arms CNC Gearbox V2 (8mm) – QSC

!! Do NOT use MAXX cylinder head !! - Retro Arms 

2024 Edition Retro Arms V2 QSC Gearbox in Black 
Standard Retro Arms V2 QSC Gearbox in Black or Blue

Key Features

• Precision machined from billet EN AW 7075 T651 aluminum
• Quick spring change guide system (QSC)
• Durable anodized finish
• Reinforcement in key stress points to counter rapid wear from high performance parts
• Pre-radiused cylinder windows - helps evenly distribute impact force
• Deeper wire channels along base of gearbox
• Anti Reversal Latch access
• Bevel gear window cut out on lower shell
• AOE viewing window ( Sector - Piston )  
• Comes with Ball Bearing Guide Plug and Gearbox Screws

I have personally been using these gearbox shells for many many years. It is a product that has stood up to the test of time, and it gets The Real Deal Approval. 

Compatibility: For Tokyo Marui, G&P, Matrix and other compatible M4 / M16 Series Airsoft AEG Rifles (Modification may be required depending on brand but mostly the rear portion of the lower receiver is where fitment issues most commonly occur ) 

Material: CNC Billet EN AW 7075 T651 Aluminum

2024 Edition Notes from Retro Arms 

We made some useful improvements into our CNC gearboxes V2:

• Spring holders have grooves, so the springs for tapped plate and trigger switch will not jump off.
• Added groove for safety lever, so it will hold during installation.
• Added groove for trigger spring, for better fitting.
• AOE control hole.
• Sockets for bushings/bearings have smaller diameter about -0,02mm (7,98mm), for non-overturning the bushings during installation. The socket edges are cutted down for better installation.
• We enhanced grooves for wiring for 1mm, you can now use wirings with 2,5mm diameter.
• Added protecting edge for wiring against the motor.
• All threads are now shaped instead of cutted for better strength.
• Both of the gearbox parts are centered by milled grooves and edges.
• Added hole for releasing anti-reverse latch.
• For better durability, we added more material around cylinder head part of the gearbox, this was the most critical part and we added 100% more material where is huge radius.
• Added groove for anti-reversal latch spring, so it will not jump off.
• Outer edges are now cutted off.
• You can find what type of sockets gearbox have on the outside part of the gearbox (8mm or 9mm).