GHK M4 / M16 Airsoft AEG to GBB Complete Gearbox Conversion kit with magazine (Version 1)

$99.00 $75.00

Model: GB-GHK-M4GBB-V1

5 Customer Reviews

by Phillip C. on 03/01/2015
"Doesn't feed very well 75% of the time. I use all the gas in a magazine before I can shoot all the BB's out, simply because the hop up won't accept BB's.
When it works, its great and fun.
by chad a. on 02/11/2015
"Bought this and a we tech aeg metal lower come to find out at least I'm my case that it requires serious modifications no matter what lower you are using a pain to install hope it is more fun to use once it's all installed. Gotta go buy more tools to finish before I can test it.
by Justin B. on 08/12/2014
"Had mine for about four days before the hop up shattered. When it did work it worked nearly flawlessly. A little locktite on some of the fasteners that vibrated their way loose. Hop up is hard to find. A few over seas store have them and one in Cali. About $25 plus shipping from g&g and about $8 from over seas. For what it is it does the job pretty good. Can be a little awkward to get in with a little tweaking here and there if necessary. 3 out of 5 just for the fact it is nearly impossible to find cheap replacement parts. Unless you find a cheap g&g gbb or a broken one.
GHK M4 / M16 Airsoft AEG to GBB Complete Gearbox Conversion kit with magazine (Version 1)
This is what G&G, Javelin and other GBB rifles have in them! This innovated GHK gearbox allows you to convert your Airsoft Electric rifle into a GBB in minutes! Swap back and forth with your gearbox for multiple gaming scenarios!
Conversion kit includes also one spare $50 value GBB magazine!

  • Converts a standard M4 / M16 AEG Rifle into a GBB Rifle
  • High Strength Nylon Fiber Shell Construction
  • Full Metal Internal Parts
  • Realistic Blowback Action

  • Gas Type: Green Gas, Propane
    Compatibility For Tokyo Marui and other similar style M4 / M16 Series Airsoft AEG Rifles. Some modification may be required.
    Package Includes: GBB Gearbox, Hopup, Magazine

    Manufacturer: GHK

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


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