The Real Deal Airsoft Optimized CNC Gearset. These gears have a re-engineered Tappet Cam positioning which change your tappet timing within your gearbox.. and changes it for the better ! Achieve higher FPS outputs, and much more consistent feeding on full auto. With our Real Deal Gears, your tappet plate will be picked up later, leaving your nozzle seated against the bucking longer. This allows more time for the nozzle to vibrate less & seal more. Compared to older generation gearsets, you will notice better compression, higher FPS outputs, and better feeding overall. Product Details Sector / Spur Gear 40cr Steel CNC MachinedBevel Gear MIM, Bevel Center Shaft CNC Machined 40Cr Steel Heat Treated Hardened Steel, Bevel Center Pin Higher Hardness TreatmentPremium low friction, high wear resistant Surface Treatment Tooth Profile has Chamfers to aid in better meshing with Piston Rack JVAN OEM Highly recommended to pair these gears with our new Ultimate Performance Piston 2025, as well all of our Real Deal Motors will have perfect pinion to bevel meshing.