Davidson Defense Aegis Lightweight 18-inch Rifle-Gas 1:7.5 6MM ARC AR-15 Freefloat M-Lok Handguard Rifle Complete Upper Build

The Aegis Lightweight 18-inch Rifle-Gas 1:7.5 6MM ARC AR-15 Freefloat M-Lok Handguard Rifle Complete Upper Build from Davidson Defense is engineered for precision and reliability. Chambered in 6mm ARC, the 18-inch barrel features a 5R rifling twist rate of 1:7.5, crafted from durable 4150 CrMoV steel and finished with a nitride treatment for enhanced performance. The upper receiver is constructed from anodized 7075-T6 aluminum, providing robust strength alongside M4 feed ramps.

Equipped with a freefloat M-Lok handguard made from 6061-T6 aluminum, this upper ensures versatile mounting options while preserving accuracy. The rifle gas system operates smoothly with a micro low-profile .750" gas block, while the included AR-15 TPI GI Birdcage flash hider effectively minimizes muzzle flash. Completing the build is a nitride-finished bolt carrier group made from 9310 alloy steel, ensuring long-lasting durability and consistent function in demanding conditions.