Great Lakes Firearms 5.56 NATO 16" 31-Round Threaded Barrel Rifle

The Great Lakes Firearms 5.56 NATO 16" 31-Round Threaded Barrel Rifle is a modern direct impingement platform engineered for law enforcement, military, and civilian tactical applications where reliability and precision meet practical maneuverability. The 16-inch barrel profile delivers the ballistic performance of 5.56 NATO ammunition while maintaining a compact overall length ideal for vehicle operations, room-clearing drills, and close-quarters combat training. Built by Great Lakes Firearms—a manufacturer known for producing duty-grade rifles that withstand sustained operational tempo—this rifle bridges the gap between service-grade durability and accessory flexibility demanded by professionals.

The threaded barrel design allows rapid integration of suppressors, compensators, or muzzle devices without permanent modification, a critical advantage during deployment when mission requirements shift or when noise signature management becomes tactical necessity. At 6.95 pounds unloaded, the rifle maintains a balanced weight distribution suitable for extended patrols and training scenarios, reducing shooter fatigue during high-round-count evolutions. The direct impingement system provides consistent bolt cycling and feed reliability across commercial and military-grade ammunition lots, while the 31-round magazine capacity ensures extended engagement capability without frequent reloads—a practical standard in contemporary force-on-force training and operational doctrine.

Law enforcement tactical teams, military personnel, and serious sport shooters benefit most from this platform's proven track record and aftermarket ecosystem; the standard AR-15 pattern ensures compatibility with a vast library of optics, rails, triggers, and stocks. The 16-inch format is particularly valued for vehicle carry, close-range precision drills, and scenarios demanding rapid target transitions. Installation of any threaded muzzle device requires only hand-tightening or a barrel wrench—no gunsmithing required—making field maintenance straightforward even in austere conditions. Proper lubrication, routine bolt inspection, and quality ammunition handling ensure years of service-grade performance.