WYSHTECH Hobbies reviews the APS Phantom Extremis MK III AEG which includes a teardown and inspection of the Silver Edge Gearbox... "In this video, we are going to teardown and review this APS Phantom Extremis Mark II's Silver EDGE gearbox. We will inspect parts, OEM shimming, compression, AOE, calculate gear and volume ratios, and do a full tune-up with before and after Chrono."
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.
Complete AEGs from APS that have the Silver Edge Gearbox are available at Evike.com. Matt gives us the highlights of this series... "The APS Silver Edge M4 Airsoft AEG Rifle Series comes from the factory decked out with a metal Keymod style rail system, a full metal receiver, retractable stock tube, APS Rhino flip-up sights, and APS' new Silver Edge gearbox.
Airsoft EspaƱa reviews the APS Silver Edge Version 2 Gear Box which is a unique gearbox given that it has a blowback and quick spring change features. This means that you can create custom version 2 AEGs with their own blowback. This review, while conducted in Spanish, has English subtitles so you can easily follow the review.