Seekins National Security Rifle 15 — a duty-grade 16-inch carbine with Seekins' NSR handguard and match-grade components. Law enforcement focused. Type: Carbine Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2016, USA Weight: 108 oz Overall length: 32" Status: Active Intended use: Law Enforcement, Tactical, Sport Shooting