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ASG STI Duty One Partial Blowback

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Free Shipping on Orders $200 or More ($9.99 for orders under $200)

Fox Airsoft offers a 30 day warranty and return policy.

What's Included: 

What you need to play:


  • Polymer frame, metal slide
  • Partial-blowback
  • CO2 stored in grip
  • 1x 16-round Magazine
  • Shoots  FPS
  • Bottom Picatinny Rail for mounting accessories

Technical Specifications:

  • Model Number: 50021
  • Muzzle Velocity: 372fps with .20 gram BB's
  • Colors: Black
  • Power Source: Co2
  • Magazine: 16 Rd Magazine
  • Internal Parts Compatibility: Proprietary
  • Barrel Diameter: 6.08mm
  • Barrel Length:  115mm
  • Barrel Thread: N/A
  • Gun Length: 220mm
  • Weight: 1.5lbs


Q: What are the main materials used in the construction of the ASG STI Duty One pistol?

A: The ASG STI Duty One pistol features a polymer frame and a metal slide, offering a combination of durability and a realistic feel.

Q: What type of blowback mechanism does the ASG STI Duty One pistol have?

A: It has a partial-blowback system, which adds a level of realism to the shooting experience by mimicking the recoil action of a real firearm.

Q: Where is the CO2 cartridge stored in the ASG STI Duty One pistol?

A: The CO2 cartridge is conveniently stored in the grip of the pistol, making it easy to install and replace when needed.

Q: Does the ASG STI Duty One pistol offer any options for accessory attachments?

A: Yes, it features a bottom Picatinny Rail, which allows for the mounting of various accessories like lights or laser sights.

About the ASG STI Duty One Partial Blowback Airsoft Pistol

The ASG STI Duty One Partial Blowback airsoft pistol stands out as an excellent choice for those beginning their journey in airsoft. This model, with its unique combination of a polymer frame and a metal slide, strikes an ideal balance between durability and a realistic feel, essential for an immersive airsoft experience. The partial-blowback mechanism is a notable feature, simulating the recoil of a real firearm. This adds an element of realism to shooting practice, making it an exciting and educational tool for newcomers to the sport.

One of the key aspects of the ASG STI Duty One is its CO2 storage within the grip. This design choice not only enhances the realism of the pistol but also makes it user-friendly, especially for beginners. Changing CO2 cartridges is straightforward and hassle-free, an important consideration for those who are new to airsoft and may not be familiar with the intricacies of airsoft gun maintenance.

The pistol's 16-round magazine capacity and its impressive muzzle velocity of 372 fps with 0.20 gram BBs make it a powerful contender in the field. For beginners, this means experiencing a significant level of shooting power right from the start, allowing for a more thrilling and authentic experience. Additionally, the bottom Picatinny Rail is a thoughtful inclusion, offering the option to attach various accessories. This feature is particularly beneficial for beginners, as it allows for customization and upgrades as they advance in skill and familiarity with the sport.

In terms of technical specifications, the ASG STI Duty One boasts a 6.08mm barrel diameter and a 115mm barrel length. These dimensions contribute to its accuracy and ease of handling, vital for those who are just starting out. Furthermore, its overall length of 220mm and weight of 1.5lbs ensure that the pistol is neither too bulky nor too light, providing a comfortable and manageable feel for new players.

In summary, the ASG STI Duty One Partial Blowback airsoft pistol is an excellent starting point for beginners in airsoft. Its combination of realism, ease of use, and powerful performance, along with the ability to customize, makes it a top choice for those looking to learn and grow in the sport.




Product Manual

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