The Aero Precision M4E1 chambered in 5.56 NATO / .223 Remington is a quality AR-15 platform rifle designed to combine modern features, durable construction, and dependable performance. Built around Aero Precision's popular M4E1 platform, this rifle offers enhanced ergonomics, precision machining, and the versatility of a traditional AR-15 configuration. This particular M4E1 features a 16-inch barrel paired with an Aero Precision ATLAS M-LOK handguard, providing a lightweight, free-floating design with multiple mounting positions for accessories. The rifle is also equipped with a B5 Systems adjustable stock, offering improved ergonomics and a comfortable, secure shoulder fit. Additionally, it features an upgraded Geissele trigger, known for its crisp, consistent trigger pull and refined performance. The combination of these quality components makes this M4E1 a well-equipped AR-15 rifle. This example comes equipped with the 16-inch barrel, Aero Precision ATLAS M-LOK handguard, B5 Systems adjustable stock, and Geissele trigger upgrade. Includes / Features: * Aero Precision M4E1 * 5.56 NATO / .223 Remington * 16-inch barrel * Aero Precision ATLAS M-LOK handguard * B5 Systems adjustable stock * Upgraded Geissele trigger * Free-floating handguard design * M-LOK accessory mounting system * M4E1 receiver platform * Semi-automatic operation * AR-15 platform * Direct impingement gas system * Adjustable stock configuration * AR-style controls * Detachable magazine design * Black finish Condition: Please review all pictures carefully for overall condition and included items.