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Kathysia industrial Co., Ltd was reorganized from Zhengzhou spring factory, which founded in 1957, having more than 60 years of professional experience in this field. Kathysia is a designated spring products supplier by the Chinese ministry of machinery industry, and a member of China spring association.

We Supply all kinds of Springs for all applications, If you can’t find a stock spring for your application, or would like to match a competitor’s spring not offered through this website, Our engineering staff is ready to answer your questions or assist in designing the right spring for your application.

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KWA RM4 SR10 ERG AEG Generation 3 Airsoft Gun Improved high-torque motor (new) Enlarged trigger guard (new) Upgraded high-speed gear set (new) Switch Life Extender to prevent contact burnout (new) Quick-change spring set up 30/120rd. magazine cut off compatibility (new) PTS Enhanced Polymer Grip (new) Rotary hop up One-piece upper receiverThis updated ERG model now shares the the newest features of the recently introduced AEG 2.5 system, PLUS simulated recoil with KWA's patented Kinetic Feedback System. Highlighted by a Switch Life Extender to minimize the wear and tear on trigger contacts, the AEG 3 combines ultimate AEG rifle with a more cost-effective training solution to provide players and professionals the best airsoft experience.Jun 25, 2014  My G&G GR16 has finally given up and started to eat itself, causing an FPS crippling air leak. So Im going to rip all the ebb stuff out and just put a standard cylinder in. Whilst Im at it I got thinking about using a quick release spring gearbox so I can swap and change the barrel lengths anThere are guns that have a quick change feature, but a Combat Machine isn't one of them. Having worked on M4s I can tell you now that you want to crack it open as little as possible, its a huge pain. I'd recommend tuning it for CQB and just bearing with it on the field until you get aGear Box: Proprietary Gearbox KWA V2.5 w/ Quick Change Spring and Empty Mag Cutoff Motor: Long Type Magazine: 6mm, 30 / 120 Rounds adjustable KWA Proprietary Magazine, also compatible with standard AEG magazines ( without cutoff ) Length: 718-800mm Weight: 2880g Battery: 7.4V/2S Li-Po Battey ( Stock Tube Type, Mini Tamiya Plug, not included )...

E&C Quick Change Spring System Version 2 Gearbox (Front

E&C Quick Change Spring System Version 2 Gearbox (Front Wire) [EC-MP045A] US$62.59 - Design for Ver.2 8mm AEG Gearbox - Included Front Wire - replace original part. Manufacturer : E&C. Notify me of updates Add to Wish List : US$62.59 : Review Write Review : There are currently no product reviews.

A quick-change spring system that can be used without disassembling the gun is another great feature for adjusting FPS to whatever the field limits require. KWA Generation 3 AEG Features: Kinetic Feedback System Recoil; High-Torque KWA AEG Motor; High-Speed Gear Set; KWA Trigger Switch Life Extender (SLE) Quick Change Spring Guide

The new KWA AEG3 SR10 features: Improved high-torque motor (new) Enlarged trigger guard (new) Upgraded high-speed gear set (new) Switch Life Extender to prevent contact burnout (new) Quick-change spring set up 30/120rd. magazine cut off compatibility (new) PTS Enhanced Polymer Grip (new) Rotary hop up One-piece upper receiver

May 19, 2016  Just a quick video on taking down a KWA SR 7 for a spring swap. I forgot to mention at the very start that you will need a 1.3 MM allen key as well. I will go into greater detail on taking down a

Jan 28, 2014  45 Second Tool-less AEG Spring Change Using a E&C EC-301-QDV2 Now in Stock and Available from http://www.18wargamehk.com/

Quick-change spring systems allows for enhanced customizability; Cons: Not compatible with hi-cap magazines; Extended barrel is not ideal for close quarters combat; Comments: The Tekken is the latest AEG from KWA's innovative Ronin rifle series. The TK.45 is a mid-range model with a sleek, agile design and KWA's exclusive Kinetic Feedback System that provides simulated recoil.

The KWA VPS typically has a 50~ FPS adjustment range, and comes equipped from the factory with a M120 equivalent spring. The primary advantage of this system is you can easily configure your FPS output to meet most CQB or field site limits, which makes the VPS system a versatile multi-role setup. Continue reading “Adjusting the KWA Variable Performance System”

Nov 29, 2018  The all new AEG 3 RM4A1 features: Improved high-torque motor (new) Upgraded high-speed gear set (new) Switch Life Extender to prevent contact burnout (new) Quick-change spring set up 30/120rd. magazine cut off compatibility (new) PTS Enhanced Polymer Grip (new) Mechanical/electric cut off system at 30/120rd Adjustable rotary hop-up Adjustable front and rear sights Removable carry

Additional features include magazine cutoff compatibility combined with a quick-change spring for users to customize their KWA AEG rifle to their own specifications. This updated ERG takes the professional airsoft training M4A1 model to a new level of performance with a one-piece full metal alloy upper receiver, a new rotary hop up and a PTS

Dec 15, 2019  The airsoft gun comes with KWA's patented AEG 2.5 gearbox that utilizes their Variable Performance System. The VPS allows you to set up a desired FPS without getting into the mechbox. Additionally, there is a quick change spring system for switching up the FPS range fit for your mission.

Aug 26, 2010  Oh, and the quick spring change is the shizzle I can go to 35 rps in less than a minute with a m100 spring and still shoot 350. If you have any questions concerning the internals, I'd be happy to help

Apr 16, 2012  I am looking for a new airsoft gun that I can use for both cqb (under 350fps) and for field play for under $200. I would like the gun to take m4 mags and also be a smaller cqb size gun but it doesn't have to be smg sized. I also have been interested in a gun with a quick change spring system. I also have a JG mp5 and m4 system and I want to

The gun is a quick change spring gearbox, you unscrew a grub screw at the back of the gun and then unscrew the buffer tube to remove the spring. The FPS seems to differ between batches, I've had some chrono stock at 320, others at 380. But, with the quick change

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  • KWA AEG3 Series RM4 SR10 — Champion Card & Paintball

    The new KWA AEG3 SR10 features: Improved high-torque motor (new) Enlarged trigger guard (new) Upgraded high-speed gear set (new) Switch Life Extender to prevent contact burnout (new) Quick-change spring set up; 30/120rd. magazine cut off compatibility (new) PTS Enhanced Polymer Grip (new) Rotary hop up; One-piece upper receiver – Length Retracted: 844.50mm

  • Dr. Airsoft

    Jan 08, 2012  Dr. Airsoft (Mark Vaughan, M.D.) demonstrates the how the new Umarex H&K G36 models by Ares can change muzzle velocity (FPS) by chaning the spring in just mi

  • PPS Completed Quick Change Spring V3 Gearbox/Motor (Rear

    PPS Completed Quick Change Spring V3 Gearbox/Motor (Rear Wire) [PPS-GB-001] US$41.14 . Quantity: Add to Cart ‧Metal construction ‧Replace original part ‧Quick change spring system ‧Comes with M130 spring ‧Comes with motor and motor base ‧Suitable for AK47, AK74 and PP19 AEG