HB Industries® Short Stroke Buffer Kit for Springfield Kuna

The HB Industries Short Stroke Buffer Kit for the Springfield Kuna shortens bolt travel and refines the operation of the recoil system. The extended polyurethane buffer limits rearward bolt travel, while the included +20% recoil spring helps smooth the cycling impulse, speeds up bolt return, and reduces the likelihood of spent cases becoming trapped behind the bolt.

Reduced Bolt Travel

The Short Stroke Buffer is longer than the factory buffer, limiting rearward bolt travel during the operating cycle. This shortens the overall cycle, promotes faster bolt return, and helps reduce the abrupt impact at the end of the rearward stroke. The result is a smoother operating cycle and improved control during rapid strings of fire.

Helps Prevent Case-Over-Bolt Malfunctions

By reducing rearward bolt travel, the buffer minimizes the space where a spent case can become trapped behind the bolt. This helps reduce the likelihood of case-over-bolt malfunctions that can interrupt the firearm's cycling.

Includes a +20% Recoil Spring

The kit includes a recoil spring rated approximately 20% stronger than the factory spring. The increased spring force compensates for the reduced compression caused by the shorter bolt travel, helping ensure reliable bolt return and consistent chambering of the next round.

Durable Polyurethane Construction

The buffer is manufactured from highly durable polyurethane that absorbs and distributes impact energy as the bolt reaches the end of its rearward travel. The kit installs as a direct replacement for the factory buffer and recoil spring.

Compatible with Springfield Kuna

The kit is compatible with all Springfield Kuna variants chambered in 9mm and .40 S&W. HB Industries specifies reliable operation with factory-configured firearms and HBI components. Compatibility should be verified on firearms equipped with aftermarket lowers, non-standard fire control components, or other modifications.

Benefits You Need to Know:

• Designed for Springfield Kuna
• Compatible with 9mm and .40 S&W models
• Extended Short Stroke Buffer
• Includes a +20% recoil spring
• Shortens rearward bolt travel
• Promotes faster bolt return
• Smooths the operating cycle
• Helps reduce case-over-bolt malfunctions
• Highly durable polyurethane buffer
• Direct replacement for the factory buffer and recoil spring
• Made in the USA