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AEX Custom Desert Viper Valken MK3 Alloy SPR AEG Plum / Tan




AEX Custom Desert Viper Valken MK3 Alloy SPR AEG Plum / Tan - Full Metal Airsoft Rifle

Looking for a full metal airsoft rifle that combines durability with high performance? The AEX Custom Desert Viper is a customized version of the Valken MK III Alloy SPR AEG, designed to offer superior performance and aesthetics. This special build takes the already impressive Valken MK III M4 SBR Electric Rifle and enhances it with top-tier upgrades, ensuring you get the best experience on the field. The durable high-quality aluminum alloy bodies are milled to finish and hard-coated for a tough exterior. The sleek design is complemented by a mil-spec free-floating MLOK rail system and a 1-piece lightweight metal outer barrel, providing both a fine exterior look and exceptional handling. This custom model features upgraded parts including the PTS Enhanced Polymer Stock and Grip, Big Dragon MK18 IRS RAS, and a NcStar 1.5-4X30 Tactical Scope, among others. The MK.III electric gun boasts a version 2.1 gearbox with a micro switch trigger system, designed and tested with 11.1v LiPo airsoft batteries. This provides a solid trigger break and reset for faster response. The gearbox also includes a quick-change spring guide and low resistance steel wire harness, making it a reliable choice for any airsoft enthusiast. Whether you're a seasoned player or a newcomer, the Desert Viper provides the precision and power needed to excel on the field.

Upgraded Parts List


  • Matte Black Aluminum Alloy Receiver
  • 6-position Crane Stock
  • Free Floating Metal CNC 15-Inch MLOK Rail
  • Flip-Up Dual Profile Front & Rear Sights
  • Metal Mil-Spec Buffer Tube
  • Metal Rear Sling Mount
  • Micro Switch Trigger
  • Functioning Bolt Catch & Ejection Port Dust Cover
  • Vented Motor Plate
  • Quick Change Spring System
  • 1-Piece Hop-up Unit
  • SHS 18:1 Ratio Metal Gears
  • Steel 8mm Bushings on Sector and Spur Gears
  • Steel 8mm Bearing on Bevel Gear
  • Metal Selector Plate
  • Full Metal Teeth Piston, 2nd Tooth Removed
  • Reinforced Tappet Plate
  • Ported Piston Head
  • Upgraded High Speed Motor
  • Anodized 6.03mm Inner Barrel (380mm length)
  • Ver. 2.1 Gearbox
  • Low Resistance Wiring


Length: 800mm
Weight: 3200 grams
Material: Full Metal (Aluminum Alloy)
Barrel Thread: 14mm CCW
Inner Barrel Length: 380mm
Inner Barrel Diameter: 6.03mm
Muzzle Velocity: ~375 fps
Fire Modes: Safe/Semi/Full
Color: Black
Gearbox: V2.1 8mm
Magazine Capacity: 350rd hi-cap M4 flash magazine
Package Includes: Gun, Magazine, Magazine Adapter, Cleaning/Anti-Jamming Rod, Orange Marking Tape, and Manual

With over 20 years of experience in the Airsoft industry, Airsoft Extreme is dedicated to providing the best products and service to the Airsoft community in the US. Trust our expertise and passion to enhance your gameplay experience.