Daniel Defense MK18 complete upper assembly in 5.56mm NATO built for a compact, reliable setup. This configuration features a 10.3 inches government-profile chrome moly vanadium cold hammer forged barrel with a 1:7 twist, a carbine-length gas system with direct impingement operation, and a Daniel Defense RIS II MK18 handguard. The 7075-T6 aluminum upper receiver with hard coat anodized finish pairs with a properly staked M16 profile bolt carrier group for dependable performance.

Key features

• 10.3 inches cold hammer forged chrome moly vanadium barrel with 1:7 twist for versatile 5.56mm NATO performance
• Carbine length direct impingement gas system engineered for the MK18 platform
• 7075-T6 aluminum upper receiver for strength and light weight
• Daniel Defense RIS II MK18 handguard with a solid, modular mounting interface
• M16 profile bolt carrier group with properly staked gas key for dependable cycling
• M4 feed ramps to support consistent feeding and reliable function

A factory-ready MK18 upper built for performance and durability, designed to drop into your AR-15 lower while keeping the modern DD standard.