Olive Spyder MR1 Gun. What's Included in the Box Spyder MR1 Marker. 12" Muzzle Brake Barrel. Detachable Stock, Allen Wrenches, Barrel Plug, Elbow, Extra O'rings, Operators Manual Full One Year Warranty From Kingman. Features 68 Caliber Semi-Auto Detachable Stock. Integrated Dovetail for Easy Sight Placement or for Mounting a Scope Off Set Feed Neck for True Rifle like Sighting Anti-double Feed Top Cocking Bolt Drop Forward Steel Braided Bottom Line Double Trigger Contoured Grip with Integrated Side Panels Drop Forward Aluminum 2-finger Trigger Matte Olive Finish Operates on CO2 or Compressed Air