This item is ITAR controlled and will require a US State Department export license to be shipped out of the United States. Please contact a THOR Sales Representative for Export information.

SKU: XM408 Category:


The THOR XM408 WINDRUNNER is a modular tactical rifle system chambered in .408CT and capable of providing extreme firepower at long range as a lightweight takedown rifle system.
This rifle is produced in conjunction with Bill Ritchie, developer of the predecessor Windrunner platform. The XM408 WINDRUNNER is mated with a 30″ free-floating fluted match grade barrel which can be easily removed without tools. Each rifle is fed using a detachable single stack box magazine, which holds five rounds of .408 ammunition.
  • Receiver: One-piece, CNC machned 4140 chromoly, hardened to 4042 Rockwell
  • Magazine: 5-round, single stack
  • Barrel 30-inch Fluted Barrel; Secured to the receiver by Uzi-style threaded nut and self-locking ratchet
  • Trigger: Remington-style, 4-lb. pull
  • Muzzle Brake: Shark-Style Muzzle Brake
  • Stock: Adjustable by sliding it away or into the receiver
  • Cheekrest: Molded Steel
  • Recoil Pad: Rubber
  • Monopod: Folds in and out of the stock
  • Bipod: M60 Style



  • Caliber – .408
  • Length
    • Extended 54.5in / 138.4cm
    • Collapsed 48in / 121.9cm
  • Weight – 26 lbs / 11.79kg
  • Barrel – 29 inches / 76.2cm
  • Twist rate – 1:13 twist
  • Rail Length – 10in / 25.4cm
    • Extended rail available for forward mounted optical devices
  • Newly developed quick release EDM magazine system
  • Suitable projectiles for this rifle:
  • GS Customs 385gr
  • Dynamic research 410gr
  • Hard case available for $450
  • Left handed stock/cheek-piece available


M408L- THOR M408 LEGACY .408CT – $12,600.00

M408-M – THOR M408 A1 MILITARY .408CT – $13,600.00


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