HB Industries® Trigger Spring Kit for Grand Power Stribog 9mm

The HB Industries Trigger Spring Kit for the Grand Power Stribog reduces factory trigger pull weight without altering the geometry of the original fire control group. Designed for 9mm Stribog models, it lowers trigger pull from approximately 6–6.5 lb to 4.5–5 lb (about 2.0–2.3 kg) while retaining the factory trigger, hammer, and sear geometry.

Reduced Trigger Pull Weight

By replacing the factory springs, the kit reduces trigger pull weight by approximately 25%. While the exact pull weight may vary slightly due to manufacturing tolerances, most firearms will achieve a pull weight of approximately 4.5–5 lb (2.0–2.3 kg). The lighter trigger makes it easier to achieve a smooth, controlled trigger press without replacing the entire trigger assembly.

Retains Factory Trigger Geometry

The kit changes only the spring rates, leaving the geometry of the trigger, hammer, and sear engagement surfaces unchanged. This preserves the original trigger characteristics while providing a lighter pull through reduced spring tension rather than redesigned fire control components.

Designed for 9mm Grand Power Stribog

The Trigger Spring Kit is compatible with 9mm Grand Power Stribog SP9A1, SP9A2, and SP9A3 models. It is not compatible with 10mm Auto or .45 ACP variants. Installation retains all other factory fire control components.

Benefits You Need to Know:

• Designed for 9mm Grand Power Stribog
• Compatible with SP9A1, SP9A2, and SP9A3
• Reduces trigger pull weight by approximately 25%
• Typical trigger pull of approximately 4.5–5 lb (2.0–2.3 kg)
• Retains factory trigger geometry
• Uses the original trigger and hammer
• Simple upgrade to the factory fire control group
• Not compatible with 10mm Auto or .45 ACP models
• Made in the USA