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APS "Silver Edge" 8mm Ver.2 Airsoft AEG Gearbox (Type: Rear Wired)

ID: 49308 (GB-APS-SE2HR)
APS / HakkotsuSE-2HRSE-2HR49308
4.5 stars, based on 13 reviews
APS Silver Edge 8mm Ver.2 Airsoft AEG Gearbox (Type: Rear Wired)
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APS / Hakkotsu


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  • Fully polished "Silver Edge" gearbox increasea overall efficiency by up to 15% from standard gearbox designs
  • Made from high strength zinc alloy; reinforced in key areas for longevity
  • 8mm stainless steel bearings provide smooth travel for the steel gear set
  • Ported cylinder optimized for carbine length inner barrels (~363mm)
  • Integrated "quick spring release" function for easy spring change
  • "Hybrid" electric blowback design (can be disabled simply by changing the mock bolt)
  • Wired to the rear with a Small Tamiya plug
About the Silver Edge Gearbox:
    The APS Silver Edge gearbox is yet another step forward with improvement of the tried-and-true version 2 gearbox. APS took their Hybrid Electric Blowback gearbox design and improved upon it with some excellent key features. First and foremost they use an improved strength zinc alloy for the gearbox shell material. They then fully polish the interior of the gearbox to a chrome-like finish, effectively reducing friction on the moving parts that contact the gearbox walls, such as the sides of the piston and the tappet plate. From there they deck the gearbox out with steel gears riding on 8mm stainless steel bearings, low-resistance wiring and trigger switch, and to top it all off a Quick-Change ball bearing spring guide allowing for easy spring changes in the future. All of these improvements net around a 15% increase in overall efficiency, when compared with standard Ver2 gearbox designs. What this means for the user is better battery life, smoother gearbox performance, and improved gearbox longevity.
Compatibility: For APS ambidextrous M4 platforms (May work with other brand TM-spec M4 AEG rifles, but will require modification)
Gearbox Type: Ver 2, Full Metal
Motor: Long Type (Not included)

Manufacturer: APS

About APS / Hakkotsu

APS Limited was established in 2001. APS started by specializing in designing and building Simulation Training Equipment (Real Action Markers & Powder Balls for training simulation). APS - the three words stand for Accuracy - Pneumatics - Shooting. With their knowledge and experience that has been gained from making Real Action Markers and Projectiles, APS launched a new product line - Electronic Blow Back (EBB) products to spur the current Airsoft Market. Since entering the Airsoft industry their line of Airsoft rifles, pistols and accessories have been incredibly popular.

13 Customer Reviews

(Write a review)

by DAVID L. on 04/02/2019
"Gear box was well designed! Dropped right in ( no modifications needed ).
The stock spring was insane! (Consistent 401 fps!)
The only negative; does not work with all brands of hop up units like pro win ( would not seal up well). I had a spare stock hop up and it sings!
This is my second aps gearbox, one in my main gun and one in my spare gun.
Great price!
by Henry R. on 03/13/2019
"APS has came a long way to this gearbox, to truly pull them apart from the other Chinese brands in the last few years. This gearbox is not the best in the world but for a stock gearbox it is quite nice. Love the trigger that comes with it and the polished shell reduces power drain decently. Easy to work on with QD spring guide for quick FPS swap is a nice touch. All in all, impressed.

Hope this review helps.
by Evan J. on 12/14/2017
"This is a very high quality gearbox shell is similar in quality to shs Cnc Aluminium with quick change spring ebb but that can be modified piston and cylinder are not the best has the 8 mm German caged bearings not the ones shown in photo which is fine with me I think they are a stronger bearing anyway I completely scraped the internals when I got it I did have to machine the inside of the gearbox to fit a different set of gears pretty easy with a drimel and router guide tungsten carbide cutter bit similar to an end mill style the ebb feature is neat I kept the bolt cover but modified it to remove the ebb feature installed it in an aps comp receiver with working bolt catch that is a really nice feature for adjusting hop up I tried a standard upper and bolt catch lever worked on that as well would recommend aps receiver tho great gear box really impressed

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