Garand Thumb puts the new Springfield Armory Kuna, a 9mm pistol caliber carbine, through its paces. He thoroughly tests the firearm, highlighting its roller-delayed system which helps reduce recoil, making it comparable to an MP5K in shooting feel. It's praised for its reliability, with no malfunctions after 1500 rounds, and features like a good trigger, ambidextrous controls similar to an AR-15, and a compact, foldable design for portability.

While generally positive, the review also points out some areas for improvement. These include a slightly mushy safety, limited handguard space, proprietary magazines, and iron sights that don't co-witness with optics. Despite these minor critiques, the Kuna is recommended as a solid purchase due to its dependable performance and comfortable shooting experience, with potential for it to become an exceptional PCC with further aftermarket support.