HB Industries® Magpul UCS Stock for Springfield Kuna

The HB Industries Magpul UCS Stock for the Springfield Kuna combines the Magpul Universal Carbine Stock (UCS) with an HBI direct-mount adapter engineered specifically for the platform. It offers six length-of-pull positions, left- or right-side folding, and two interchangeable cheek risers for proper eye alignment with optics. The dedicated HBI adapter mounts the stock directly to the firearm, eliminating the need for an additional 1913 interface.

Six-Position Length Adjustment

The Magpul UCS provides six length-of-pull adjustment positions with a total adjustment range of 3" (approximately 7.6 cm). Installed on the Springfield Kuna, the length of pull can be adjusted from approximately 10.8" to 14" (27.4–35.6 cm), allowing the stock to be tailored to the shooter, shooting position, or body armor.

Left- or Right-Side Folding

The folding mechanism can be configured to fold to either the left or right side of the firearm, allowing the setup to be optimized for the user's preferences and mounted accessories. Folding the stock significantly reduces the firearm's overall length for transport and storage.

Interchangeable Cheek Risers

The stock includes two removable, reversible cheek risers measuring 0.50" and 0.75" (12.7 mm and 19.1 mm). They allow the comb height to be adjusted for a more consistent cheek weld when using red dot sights or other optics. The cheek risers can be installed or removed without tools.

Dedicated Springfield Kuna Adapter

The HB Industries adapter replaces the factory rear interface and mounts the stock directly to the firearm, eliminating an additional 1913 adapter between the receiver and the stock. Machined from 6061-T6 aluminum and finished with MIL-A-8625 Type III hard anodizing, it provides a rigid, low-profile mounting solution.

Integrated QD Sling Socket

The UCS features an integrated, rotation-limited QD sling socket for a quick-detach sling swivel. A Magpul MOE SL Enhanced rubber butt pad provides a secure shoulder purchase and improves shooting comfort.

Benefits You Need to Know:

• Designed for Springfield Kuna
• Magpul Universal Carbine Stock (UCS)
• HB Industries direct-mount adapter
• No additional 1913 adapter required
• Six-position length-of-pull adjustment
• 3" (7.6 cm) length adjustment range
• Length of pull adjustable from approximately 10.8" to 14" (27.4–35.6 cm)
• Configurable for left- or right-side folding
• Two interchangeable cheek risers
• 12.7 mm and 19.1 mm cheek risers included
• Tool-free cheek riser installation
• Rotation-limited QD sling socket
• Magpul MOE SL Enhanced rubber butt pad
• Machined 6061-T6 aluminum adapter
• MIL-A-8625 Type III hard anodized finish
• Made in the USA