For owners of the Valken Alloy AEG Series, Valken Tactical has released a video showing a howto in removing the gearbox... "This video goes in-depth on how to remove the gearbox from your Valken Alloy AEG. Check out the Alloy series and other awesome airsoft products at Valken.com or your local Valken retailer."

It looks like Legionitalia had a very bad experience with the Umarex/Ares Airsoft SL-9 Geabox. He claims he bought the AEG thrice, experiencing problems three times.. Well, better watch the video to learn more and make your own conclusions... "Clearly there is absolutely NO QC at Umarex, HK should REVOKE their licensing immediately, Avoid ALL of their products unless you enjoy spending extra money to repair a NEW airsoft. Obviously they didn't even test them, not even one BB.

Here is a guide in gearbox tuning by Reapers Airsoft. Just turn on your language caption as this is done in German... "Hi, in today's video, we build the Gearbox my A & K Masada on completely new, while I tell you step by step what you have to note that individual components such as Shell, Cylinder, Piston, AOE (Angle of Engagement), Nozzle, Pistonhead so your box is as good as possible. At the end, there are still a small test with Chrono Lonex M110 and M120 spring.

Video released by Airsoftjunkiez showing you how to install the Redline N7 Milsim Edition HPA Drop-In Kit to a Krytac Gearbox. This kit is a true closed bolt and fully mechanical HPA cylinder replacement. It is weatherproofe and does not require any battery or FCU and less joule creep as compared ot other HPA engines for airsoft... "Defcon Leader shows in depth details of how to install a Mislim N7 into a Krytac gearbox."

Airsoft Reviews HD takes apart a CYMA Gearbox as well as tackle the problem of trigger jam in AEGs... "In this episode we disassembly a Cyma CM 046A airsoft gun and we give to you information about the trigger jam problem in many AEG's and how you can deal with it! Also we give you many detailed information of how you can disassembly a v3 gearbox and how you can clean and adjust every moving part."

The VFC Avalon series is a premium line and Jonathan Higgs of Airsoftology gets to the guys of the VR16 to check out the gearbox if it can command a premium price... "Jonathan tears apart the new VR16 mechbox from inside of the VFC Avalon series to show you all of the parts that have been upgraded and changed... but is there a surprise hiding inside this Gearbox?  Watch and see.

HUGE Thanks to Elite Force for making the trip to Taiwan possible!"

For those who are just about to do their maintenance or repair of their AEG gearbox, here is a video from Reaper Airsoft how to do it. Watch and learn... "Today we take a look at the normal walk through on an Airsoft AEG Repair. AEG Bearing Failure and Stripped Gear set."

Learn more about gearbox air compression in this video from AirsoftReviews HD... "In this technical video, we explain how a gearbox can lose fps rate cause to bad air sealing and low air compression due to technical problems. Using an upper receiver from a G&G L85A2, we will give you usefull advice of how you can increase air sealing only with some modification that will not cost you money. Stay tuned for more technical videos on AIRSOFT REVIEWS HD!"

Find out more about the new geabox parts from Tornad with this video presentation from Gunfire... "Tornado brand new products launched in 2017. Watch the video and take a look at CNC'd parts the internal components for your gearbox such as pistons, piston and cylinder heads, hop-up chamber or gears. All made with the utmost attention to detail and quality components.

Tornado parts available here: http://bit.ly/2p2cmJI."

APS posted a 3D video animation of their Silver Edge Gearbox. This is their Hybrid Blowback Gearbox that has been improved, polished for reduced friction and uses 8mm stainless ball bearings. It has polycarbonate piston, ported cylinder, steel fear set, and quick spring release feature.