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Lonex SR-16 Complete SP120 AEG Gearbox (Original Type)

[O00A04][12354 / GBA-02]
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Lonex Technology Co., Ltd was established in 1980 in Taipei Taiwan, who mainly supplies plastic injection mold and injection molding OEM Services. Their injection molding and plastic Injection Molded parts are widely used in auto accessories, electronics, household appliances, medical devices, game players, and computer displays fields. Lonex Technology is certificated by ISO9000 and TL-9000. They earned customers' recognition, reliability and loyalty by high quality, various products, quick response, on-time delivery, and technology service. Lonex insists on enhancing quality and satisfying customers' demands, and is expected to offer their products in the global world. Their team is using international advanced CAD/CAM/CAE design methods and the integrated manufacturing system. Some parts are built with computer assisted design tools such as Computer Numerical Control (CNC) turning operation to ensure top notch precision and quality. In addition to the design and manufacture of high quality airsoft guns, Lonex Technology also offers OEM and ODM service for airsoft and firearms manufacturers. Lonex Technology supplies wide variety of replacement and upgrade components to their distributors and as well as dealers. Lonex Technology is constantly researching new ways to innovate designs and materials to ensure the best quality of our products, and is committed to the best service support for their customers.

The Lonex Complete Gearbox is designed to be an easy upgrade from the stock V2 M4 gearbox. The gearbox shell is Lonex's Enhanced 8mm V2 gearbox. Internally, the gearbox features all of Lonex's components. These parts include their red polycarbonate piston with ten metal teeth, steel full cylinder, cylinder head, aluminum piston head, POM Air Nozzle, enhanced Steel 18:1 gear set, low resistance wire harness and other pre-upgraded parts from Lonex. With the included M120 spring, this gearbox is ideal for those playing at outdoor environments. For the price, Lonex has done an excellent job in providing high quality parts at an exceptional cost.

Manufacturer: Lonex
Model: SR16 Complete Gearbox
Color: Brushed Nickel Finish
Package Includes: One (1) Complete Gearbox


  • 2nd Generation Lonex Gearbox
  • Air seal nozzle
  • Enhanced tappet
  • Aluminum cylinder head
  • Steel cylinder
  • Aluminum piston head
  • Enhanced 10 steel teeth piston
  • Tune-up spring SP120
  • Steel ball bearing spring guide
  • Anti-heat electric switch
  • Enhanced gear (Original ratio)
  • Enhanced anti-reversal latch
  • Enhanced trigger
  • Anti-Heat Selector Plate for M16 Series
  • Cut Off Lever for Gear Box Ver.2
  • Safety Cover
  • 8mm ball bearing
  • Gear Box Spring Set for Ver. 2
  • Shim Set
  • Teflon gear grease

Manufacturer: Lonex
Color: Brushed Nickel Finish
Material: Metal / Polycarbonate
Package Includes: One (1) Complete Gearbox

see 1 reviews | Write a Review
verified buyer
S. KU | 2013-06-22
Product Information:
I bought the Lonex complete gearbox for a scratch build. I expected it to be a drop-in but unfortunately, it is not. The air nozzle is too long and protrudes into the hop-up chamber, causing feeding issues. There is no sector gear clip. Had one been included, it might help with moving the tappet plate/air nozzle back enough to feed properly. It's no longer a "drop in, complete" gearbox if you have to open the gearbox.

-Nice internals
-Reinforced in the critical areas in the front

-Air nozzle protrudes too much into the hop-up chamber
-No sector gear clip
-Could use a bit more grease on the gears
Search Tags: Internal Upgrade Modification Performance Version 2 Drop In SP120 M120 SP 120 M Complete Gear Box

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