What's in the Box Springfield Kuna 9mm Roller-Delayed PDW (2) 30-Round Magazines Owner's Manual The Springfield Armory Kuna Tri-Lug 9mm Pistol pairs a compact roller-delayed platform with an integrated tri-lug suppressor-mounting interface. Its tool-free push-and-twist connection allows fast transitions between suppressed and unsuppressed configurations, while ambidextrous controls and a monolithic aluminum upper support confident handling. Firearm Features Integrated tri-lug interface supports quick, tool-free suppressor attachment and removal Integrated Hybrid Flip-up iron Sights Roller-delayed operating system promotes smooth, controllable operation Fully ambidextrous controls accommodate right- and left-handed shooters Monolithic aluminum upper provides a rigid, durable platform Compact, maneuverable profile is suited to close-range applications Push-and-twist mounting system enables rapid configuration changes Includes Strike Industries FSA Brace Includes 2 30-Round Magazines Firearm Specifications Manufacturer: Springfield Armory Model: Kuna Caliber: 9mm Luger Barrel: 6" Cold Radial Hammer Forged, Melonite 1:10 Sights: Hybrid Flip-Up Upper Receiver: Monolithic Forged 7075 T6 Aluminum, Type III Hardcoat Anodized Lower Receiver: Injection Molded Glass-Filled Polymer Gas System: Roller Delayed Handguard: Integral, M-LOK Pistol Brace: None Trigger: Flat Aluminum Muzzle Device: Multi-Port Muzzle Brake Receiver End Plate: Picatinny Charging Handle: Ambidextrous, Non-Reciprocating Safety Switch: Ambidextrous Trigger Guard: Integral to Receiver Grip: AR-Pattern with Adaptive Grip Texture Magazines: (2) 30-Round Magazines Weight: 5 lbs. 5 oz. Length: 15.5"