Springfield Armory FirstLine Kuna .40 S&W Pistol with FSA Folding Brace, 6" Threaded Barrel

Overview

The Springfield Armory Kuna FirstLine is a compact .40 S&W pistol built around a roller-delayed operating system that helps reduce felt recoil and improve control. It combines a 6-inch threaded barrel, ambidextrous controls, hybrid flip-up sights, M-LOK handguard, and a Strike Industries FSA folding brace for enhanced stability and portability.

Key Features

• Roller-delayed system reduces felt recoil
• 6-inch cold hammer forged, Melonite-finished barrel with 9/16×24 threads
• Strike Industries FSA folding brace and Picatinny end plate
• Ambidextrous controls with reversible, non-reciprocating charging handle
• Integral M-LOK handguard, flip-up sights, multi-port muzzle brake, and flat trigger
• Includes (2) 30-round translucent magazines with metal feed lips

Specifications

• Manufacturer/Model: Springfield Armory Kuna FirstLine
• Caliber: .40 S&W
• Receivers: Monolithic Type III hardcoat-anodized aluminum upper; glass-filled polymer lower
• Operating System: Roller-delayed
• Barrel: 6 inches, 1:16 twist
• Length: 15.5–24.5 inches
• Weight: 5 pounds, 5 ounces
• Grip: AR-pattern with Adaptive Grip Texture
• Safety: Ambidextrous
• Magazine Capacity: 30 rounds

MPN: KN90640B-FSA-FL
UPC: 706397011093

Applications

Ideal for range training, personal defense, recreational shooting, and compact pistol-caliber applications where maneuverability and recoil control are priorities.

Additional Features

The folding brace supports compact storage and quick deployment, while the translucent magazines allow fast ammunition checks.

Please check out our special deals on .40 S&W ammunition.