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G&P Complete 8mm Reinforced Gear Box for M4 M16 Airsoft AEG (Configuration: Rear Wired / Small Taymiya / 340-400 FPS)

ID: 24818 (GB-GP-EV-GB001B)
4.4 stars, based on 24 reviews
G&P Complete 8mm Reinforced Gear Box for M4 M16 Airsoft AEG (Configuration: Rear Wired / Small Taymiya / 340-400 FPS)
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$89.00 $75.00

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.


  • Drop in upgraded gearbox works with most M4/M16 receivers as well as other AEGs that utilize a version 2 gearbox
  • Durable, reinforced G&P construction ensures reliable operation and lifespan as well as easy to replace, upgradeable components
  • Complete gearbox
  • 8mm steel bearings. steel gears and numerous high grade components make this one of the most reliable gearboxes on the market
  • Utilizes screw type motor connectors
Power: 340~400 FPS
Wiring and Connector: Front wired with a standard Deans plug
Compatibility: Most popular M4/M16 series AEGs or other AEGs that utilize a Version 2 gearbox
Material: Aluminum, Steel, Metal Alloy

Manufacturer: G&P

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About G&P

G&P is among the oldest Military-simulation and training Airsoft manufacturers in the world. Started as a top combat light provider for law enforcement and military agencies around the world, G&P branched into Airsoft manufacturing with the same belief to never sacrifice quality for lower price. Their motto is visible on every G&P product. Every G&P AEG rifle is hand assembled and individually fine-tuned by top technicians in the industry to match G&P's unparalleled quality and reputation. G&P utilizes CNC precision machining and real-steel finish/coating processes on many of their products.

24 Customer Reviews

(Write a review)

by Lorin S. on 10/09/2017
"It was good while it lasted. I decided to try a G&P "Super Custom" High Torque motor and the gearbox shredded inside. The bevel gears bottom post broke off and caused 1/2 of the teeth on the spur gear to shear off. When I opened the gear box to check it out I laughed at how much damage was done LOL

RIP nice new gearbox
by Brian C. on 08/11/2017
"Very happy with this gearbox. Put it in my completely stock G&G Combat Machine. It did require a little work to get it in. I could have used the thinner wires that came with the gun, but wanted to use the thicker and more flexible ones the gearbox came with.

FPS: I have had it chronoed with 0.20 bbs. Came in at 330 fps. I have another completely stock G&G Combat Machine that comes in consistently at 350, so this is a little slower... but MUCH quieter and smoother. The trigger response is infinity better even with the stock motor.

I plan on switching to an M120 spring and high torque high speed motor. That ought to get me closer to the 400 FPS limit of my local field.
by Bradley L. on 03/15/2016
"1) motor wires are too fat for motor to fit properly
2)trigger contacts stuck after pulling trigger a few times using a 9.6v
3)motor connectors are specific to g&p motors only

Pain in the butt gearbox I wouldn't reccomend unless you are patient and a good airsoft mechanic with lots of time.

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