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EMG x Retro Arms CZ Billet CNC 8mm Ver.2 Gearbox Shell for M4 / M16 Series Airsoft AEG Rifles (Color: EMG Blue)

ID: 18709 (GB-EMGxRA-CNCV2-BU)
7597 - EMG BLUE
EMG x Retro Arms CZ Billet CNC 8mm Ver.2 Gearbox Shell for M4 / M16 Series Airsoft AEG Rifles (Color: EMG Blue)
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EMGRetro ArmsEvike Exclusive

$119.00 $101.15

MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.
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Features

  • 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
  • EMG Logo engraved on side of gearbox
Unlike most other gearbox shells on the market, the Retro Arms CZ gearbox shells are precision CNC machined out of a solid block of billet EN AW 7075 T651 aluminum giving them unmatched durability and resilience. Combined with reinforcement of key stress points and stainless steel connecting bolts, the gearbox shell has undergone extensive stress tests with M160 springs without any signs of wear.

Version 2 Retro Arms gearboxes feature a quick-change ball-bearing spring guide mechanism, allowing spring swaps in a matter of minutes without complete gearbox disassembly.

Manufacturer: EMG x Retro Arms CZ

Specifications:

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

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

About EMG

The EMG vision is to manufacture products the world has never seen before; products we would put our name on, and products that hit the spot! "EMG" (Evike Manufacturing Group) was spawned from the realization that if you want something done exactly the way you want it, you need to do it yourself, and we did just that.
We took our 16 years of knowledge as the market's lead retailer, our network of 300+ superior manufacturers, to work with inspiring top innovators in the firearms industry. That combined with the vision to invest into the Airsoft industry, an industry we believe in, EMG was born.

About Evike Exclusive

At Evike.com, we believe that superior outdoor recreational products can create a better world. That is why we develop, innovate, and pioneer to bring you the perfect experience, service, and products.

8 Customer Reviews

(Write a review)

by Dexter A. on 10/02/2024
"Put this gearbox for a 30 RPS 300fps build with the Leviathan trigger and I have to say I'm very impressed with this gearbox and could be the best gearbox shell I've ever seen and used!
It's extremely light, very solidly built, and comes with everything you need to build it. The one thing that stands out a lot, is there's a groove for the wires that go under the motor, rarely do I see something like this in a gearbox and this makes it so the wires don't get entangled with your motor. A very nice addition and very necessary for high speed builds. The AOE window for the sector gear and piston, is also a nice plus. Lastly, the weight, it is ridiculously light and when you finish your gun there is a difference in feel, not significant, but a difference nonetheless.
Ran 250rnd midcap full auto straight, no stops, and the gearbox took no damage.

There are some small caveats though, if you've teched before, is an easy thing to handle. Retro arms own bushings require some sanding on the gearbox holes for them to fit properly. One or two minutes on the Dremel and it solves that issue, no problem. Also, the trigger threads for the screw are not the same as a standard gearbox but they do give you the screw for it. Not sure why they decided to go this route, but as long as I got the screw I'm good.

Excellent product by retro arms. Will buy again!
by Ryan C. on 03/16/2023
"This is a great gearbox shell that fits everything I want in it and is finished with superb percision.
by Amery M. on 05/23/2022
"Man this thing is well built. Lots of great viewing windows for shimming and AOE checks. If you're a great builder I'm sure you can use this to do a bang up job unlike myself. 10/10

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