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Pre-Order ETA July 2024 Retro Arms Pre-Built Complete Gearbox (Color: Green Edition)

ID: 116340 (GB-RA-0001)
Pre-Order ETA July 2024 Retro Arms Pre-Built Complete Gearbox (Color: Green Edition)
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Retro Arms


Pre-orders are always filled first but you can sign up below to be notified when the item is becomes available for immediate purchase.

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This is a pre-order item with an ETA (estimated arrival) of July 2024

A pre-order item is an up coming new product, or an item in the process of being restocked to the platform by it's manufacturer.By pre-ordering an item, you will have reserved the inventory availability to receive it before the goods arrive. All pre-order items are eligible for a full refund at any time during the waiting period; simply call or drop us an email with the order # and the pre-order item you would like to cancel for an immediate refund. Due to circumstances such as US customs inspection, factory delays and other situations out of our control, all ETAs (estimated time of arrival) are estimated to our best ability and are subject to change.


  • Precision machined from a block of billet EN AW 7075 T651 aluminum
  • Quick change spring guide system
  • 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

Manufacturer: Retro Arms CZ


Compatibility: For Tokyo Marui, G&P, Matrix and other compatible M4 / M16 Series Airsoft AEG Rifles (Modification may be required depending on brand and model)
Material: CNC Billet EN AW 7075 T651 Aluminum, Steel, Polymer
Package Includes:
  • RA CNC gearbox V2
  • RA PandoRA gearset 13:1 SS (3mm)
  • RA ball bearings 8mm
  • RA INOX shims
  • RA cylinder type C
  • RA cylinder head STANDARD
  • RA piston 14.5
  • RA nozzle
  • RA tappet plate
  • RA delayer chip
  • RA ARL
  • RA piston head A1
  • RA selector plate
  • RA trigger type J
  • Jefftron Leviathan V2
  • Dean T connector

  • Disclaimer: Please use discretion when installing custom parts as fit and compatibility may vary. Some modification may be required. Professional installation recommended.

    Note 1: Every gearbox is built and tested by Retro Arms. Tested on Delta Armory R15 Freya, RA Hop-Up Chamber and Warhead 31k motor.Results depends on many factors.

    Note 2:Gearbox is built for 350 fps / 1.2j.

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    Warning: California's Proposition 65

    This is a pre-order item.

    Pre-order estimated arrival: July 2024

    By adding a pre-order item to your shopping cart, you will guarantee yourself to have the item reserved before they are offered as an in-stock item. Often, you will also save on shipping while not risking a rate item being sold out before you have a chance to buy it. Being the largest Airsoft distributor in the America continent, is the gateway for many exciting items entering the Airsoft world. All pre-order items are tagged with our best estimate on arrival times factoring in manufacture delay, us custom examinations and other factorys to the best of our ability. The goods on pre-order generally arrive before they are past due or on-time 99% of the time. All pre-order items are processed subject to item availability on a first-come, first serve basis. All orders and payments are processed at the time of payment. Buyer reserve the rights to a full refund on any pending pre-order items at any time.

    This item is currently Sold Out. Most out of stock items are restocked within 1-3 weeks. Some items may take longer. Please add this item to your wishlist to keep posted on its availability.