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G&P Complete "Special Ops" M4 Metal Receiver & Gearbox Airsoft AEG ProKit (G&P USA) Rear Wire / Black

ID: 41446 (PROK-MB009B-B)
3.3 stars, based on 7 reviews
G&P Complete Special Ops M4 Metal Receiver & Gearbox Airsoft AEG ProKit (G&P USA) Rear Wire / Black
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Looking to build your dream AR-15 M4 M16 AEG without compromises? The G&P ProKit is dedicated to provide you the top selections of everything you need; and nothing you don't. Every G&P ProKit comes complete with a per-assembled AR-15 M4 receiver, a fully tuned complete gearbox, G&P motor, motor grip, and integrated deans adapter low resistance wiring harness to start you off without compromises. All that's left between you and your custom dream build, will be a front-end of your choice and stock! The ProKit is a great start for the intermediate and advanced players who wants to take advantage of the vast selections of m4 front end furniture and stocks available at The G&P gearbox, motor and receiver is globally recognized to be among the highest rated. Our chronograph, ROF meter, voltage and current meter have also verified that the G&P gearbox runs with lower resistance, a higher rate of fire (given same spring rating) and much smoother as the result of years of research and development G&P put into their performance parts.

Compatibility: The G&P ProKit is compatible all major brand compatible M4 / M16 series front ends and stocks.
Power: M120 (360~450 FPS depending on setup)
Laser Engraving: Special Ops.
Wiring: Rear. Low Resistance High Gauge Anti-Heat Wiring Harness.
Plug Type: Standard Deans
Gearbox: 8mm Bearing Gearbox.
Motor: G&P High Performance high speed M120 motor.

Manufacturer: G&P

Things you may need to get started:
    Battery and Charger – Required to power your AEG; use a high quality battery and charger for best results.

    Spare Magazines – Stay in the fight longer by bringing more ammo with you.

    BBs – High quality precision 6mm BBs recommended; Use 0.20g – 0.25g BBs for best results.

    Silicone Oil – Basic cleaning and lubrication maintenance help keep your Airsoft AEG in top working order.
Package Includes:
  • G&P USA "Special Ops" Full Metal Laser Engraved Receiver
  • G&P Award Winning 8mm Bearing Complete Gearbox (Rear Wiring)
  • Integrated high performance Standard Deans type T connectors.
  • M4 Cocking Handle
  • New Dust Cover Set
  • Reinforced G&P Metal Bolt Cover / Receiver Pin Set / Forward Assist Knob / Selector / Magazine Catch
  • Reinforced G&P Metal M4 Trigger Guard / Bolt Stop
  • G&P M120 Motor and Motor Grip
  • *If you are looking to build your dream AEG with the front-end, RIS, and stock of your choice: This kit comes complete with everything you need! The gearbox and metal receiver assembly are all pr-assembled!
  • FPS Range: 360-450

    California residents click here for Proposition 65 warning

    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.

    7 Customer Reviews

    (Write a review)

    by Luis M. on 08/08/2015
    "Well I purchased this gearbox well over a year ago as is. I have completely built a gun around it with a price tag of about $600, and this gearbox and body are still running strong. The wiring myth is true it does get hot, but nothing will happen to the gearbox from my experience. I have a Lonex Hopup, Angel Custom 6.01 TBB, Angel Custom H-Nub, and G&P bucking installed and my gun shoots 415-425 FPS with .20 at about 17 rps, with a 7.4v 20C 1000mAh LiPo.

    Sturdy body
    Perfect fit threads for any rails
    Rails on top are perfect
    Sick trades
    ITS G&P
    405-410 FPS out of box
    Long Wire
    Solid feel

    The heating up wiring(not an issue)
    Big ass Evike logo on the right side (personal, just don't like it)
    The part where the buffer tube goes onto was a bit too long and I had to cut some off to get my buffer tube on.
    by Simon V. on 03/19/2015
    "Seriously I'm not even sure if this is a real G&P... no G&P markings ANYWHERE (not the mechbox, externals, nothing...). Even the exterior threads for the RIS should different from other brands and well... it's not the case. I opened it up with my tech and even he thinks there is something weird about it. Personnaly I think it's an evike knock-off from China but that just my assumption. Oh forgot to say my gearbox cracked in my first season....
    by Curtis B. on 03/16/2015
    "I purchased this on hopes of a quick remedy to find a metal Reciever decent gearbox. From what I have seen from G&P beforehand was quite promising. Upon testing this out with a 7.4 LiPo battery, I noticed the motor, battery and wires getting hot. Mind you this is about 30 shots on semi. While I expected heat, I didn't expect this magnitude. I open the motor trip to find a G&P M120 motor which I expected, but didn't expect te to. Connections to the screw terminals on the motor to be so loose. There was at least 1mm of play which makes for horrible resistance. After cranking the screws down. Still heat but not as much. Hoping to reshim, correct AOE. All the realizable basics.

    Metal Reciever & decent gearbox

    370-380 with .25s too hot for indoor. (Could be pro)
    Poor Assembly from Factory
    Not worth price

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