G&P Limited Edition "Bulldog" Metal Body with Complete 7mm Gearbox Set / Challenge Kit

$160.00 $128.00

This item is currently Discontinued

Model: Kit-GP-MK001
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1 Customer Review

by joseph l. on 04/15/2012
"My brother bought this and I ended up building him a gun using this. Externally, the body is extremely high quality. Everything fits tightly together, except for the rear body pin. However, this was expected, because I have seen G&P guns before and have been impressed with their overall quality.
Internally, the quality is just as high, but there were a few problems for me. Worst of all, the bushings were plastic. I ended up having to use some old G&G brass bushings that make the gun sound like crap. So if you plan on buying this, if it ever comes back in stock, buy 8mm bearings! The gearbox was 8mm, not 7. Everything else was very high quality, and does not need replacement. The gears are still working after ~1000 rounds. I also replaced the cylinder with a systema energy cylinder because the stock one was unported.
All in all, you should shim, grease, and adjust the AOE of the gearbox because it needed it. Replacing the bushings is necessary if you want the gun to last. Also, i suggest replacing the cylinder if your inner barrel is any less than 509mm (m16 length). Otherwise, I think this was money well spent, and an amazing deal as well.


G&P Limited Edition "Bulldog" Metal Body with Complete 7mm Gearbox Kit
These are limited time release by G&P exclusively for the G&P USA Exclusive distributor Evike.com, for the advanced Airsoft hobbyist who wanted the best gearbox and highest quality receiver. If you are looking to take advantage of the huge selections of front end and stocks here at Evike.com, you can now buy only what you need! This kit includes the award low power consumption / high power efficiency / high performance G&P gearbox and among the highest quality metal receiver out there found on all the high end G&P rifles.

For:For all major brand compatible M4 / M16 series front end and stock
Power: M120 (350~450 FPS depending on setup)
Logo: Laser Engraved US Marine Bulldog
Wiring: Rear
Manufacture: G&P

Package Includes:
  • Marine Bulldog Metal Body (B Type) Laser Engraved receiver
  • Pre-upgraded 7mm Bushing Complete Gearbox (Rear Wiring)
  • Integrated high performance 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
  • *This kit comes complete with everything you need to build a custom G&P M4 but the motor, grip, front-end, magazine and stock.


  • This product was added to our catalog on Wednesday 21 April, 2010.

    This item is Discontinued.

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