ASG STI Duty One CO2 NBB Steel BB gun

Type: BB Pistol
Manufacturer: ASG
Model: STI Duty One 1911
Materials: Metal slide and polymer frame
Weight: 816.47 g (1.8 lb)
Barrel: Metal, non-rifled
Power Source: 12 g CO2 x 1
Action: Semi-automatic, non-blowback, single and double action
Ammo Type: 4.5mm steel BBs
Ammo Capacity: 20 rounds
FPS: 407

Buy the magazine: ASG16731

Trigger Mechanics: The trigger on this model exhibits a relatively light pull in both single and double-action modes. In both settings, the initial pull feels consistent, but in single-action, there's minimal resistance until nearing the final stage where the hammer releases.

Shooting Precision: The STI averaged 373 FPS in terms of velocity. At 30 feet, the firearm maintained a tight 2-inch grouping, particularly in horizontal alignment.

Manufacturing Excellence: ASG has excelled in crafting the STI Duty One 1911. The choice to utilize a polymer frame is the only significant concession, as crucial components like the slide, slide catch, safety, magazine release, hammer, barrel, and magazine are all crafted from metal. The overall assembly and finishing touch are commendable.

Authenticity: The ASG STI Duty One 1911 mirrors the real STI 1911 closely, with the main distinction being the unique trigger design. Despite this difference, the STI Duty One remains an excellent representation of the original, complete with STI's official licensing and trademarks.

Pros:

• Optimal blend of metal and polymer materials.
• Functional metal slide and slide catch.
• Exceptional build quality and fitting.
• Enhanced CO2 efficiency compared to its blowback counterpart.
• Windage-adjustable rear sight.
• Metallic drop-out magazine.
• Comfortable and solid grip.

Cons:

• The trigger design diverges from the classic 1911 style.
• Lacks an operational grip safety.
• Extracting CO2 can be challenging.

Comments:

Comparing the non-blowback (NBB) and blowback versions of the ASG STI Duty One 1911, without actual firing tests, reveals striking similarities, including the presence of double and single-action triggers in the NBB variant. The slide function seems equivalent in both models. Given their similar high FPS and accuracy levels, one might lean towards the blowback model for its quicker and lighter single-action trigger response. The primary drawback of the blowback variant is its higher CO2 consumption, yet it still delivers an impressive rate of about 100 shots per CO2 cartridge, a notable efficiency for a CO2-powered blowback pistol.