Daniel Defense MK18 5.56mm Upper Receiver 10.3" Barrel
Daniel Defense MK18 upper receiver in 5.56mm NATO with 10.3" barrel and RIS II rail system. Compact, combat-proven design for modern tactical rifles.
Daniel Defense MK18 Upper Receiver
The MK18 upper receiver represents decades of combat refinement and represents one of the most proven short-barreled upper designs in service today.
Key Features
- Caliber: 5.56mm NATO
- Barrel Length: 10.3 inches
- Rail System: RIS II (Rail Interface System II) for maximum accessory compatibility
- Finish: Black anodized
- Design: Flat-top Picatinny rail for optic mounting
Performance Characteristics
The 10.3" barrel provides excellent velocity retention while maintaining a compact profile ideal for close-quarters work, vehicle operations, or home defense applications. The RIS II rail system offers genuine Picatinny compatibility for lights, lasers, and forward grips.
This upper receiver pairs with any standard AR-15 lower receiver, making it a versatile upgrade path for existing rifle platforms or the foundation for a new build.
Quality You Can Trust
Daniel Defense components are manufactured to exacting military specifications and have proven themselves in professional service worldwide. This is a complete upper assembly ready for mounting to your lower receiver.
Features
- black ris ii rail system
- low profile gas block
