Aside from its looks, this BB gun is unique because it allows shooters to use it as a long tactical airgun with the butt stock and barrel extender attached, a smaller profile carbine with the barrel extender removed, or a shorter tactical air pistol with those two pieces removed. This enables a single air gun to fulfill multiple functions, so shooters get extra value out of their purchase, as well as getting the benefits of a full auto air pistol and a full auto air rifle.

• Firing Modes:
  • Full-auto or semi-auto
• Ammunition:
  • Uses .177 caliber BBs
• Magazine:
  • 25-round drop-free magazine
  • High-capacity 300-round reservoir with built-in speed loader
• Modular Design:
  • Allows user to operate the gun in three configurations:
    • Long tactical airgun with barrel extender and buttstock
    • Compact carbine with barrel extender removed
    • Short tactical air pistol with both components removed
• Barrel:
  • Quick detach barrel extender (adds 9.375″ of barrel length)
  • Barrel length with barrel extender: 15.5″
  • Barrel length without barrel extender: 6.125″
• Dimensions:
  • Overall length with barrel extender and buttstock extended: 33″
  • Overall length without barrel extender and buttstock removed: 17.75″
• Stock:
  • Two-position adjustable buttstock
  • Removable buttstock
• Velocity:
  • Max. velocity: 450 FPS
• Sighting:
  • Includes red dot sight
  • Long Picatinny optics rail
• Grip:
  • Textured ergonomic pistol grip
  • Textured forward grip
  • Ridged rubber buttpad
• CO2 Cartridges:
  • Uses two 12-gram CO2 cartridges

The Crosman ST-1 Full-Auto shoots .177 caliber steel BBs from its 25-round drop free magazine to facilitate both full-auto and semi-auto mode, and a high-capacity 300-round BB reservoir with built in speed loader simplifies reloading the magazine and reduces downtime. The tactical stock features an ergonomic textured pistol grip and a textured forward grip for comfort and control, and the ridged rubber buttpad on the removable buttstock gives shooters a repeatable hold. For accuracy when aiming, this select-fire BB gun comes with a red dot sight, and shooters can add a scope or other sighting device to the long picatinny optics rail. In addition, forearm picatinny accessory rails on both sides and the bottom provide attachment points for items such as tactical flashlights, lasers, and bipods.