One OH-CU04 16" 300 Blackout Complete Upper
Complete 16-inch upper receiver in 300 Blackout from One. Ready to pair with your lower receiver for a versatile, modular rifle platform.
One OH-CU04 Complete Upper Receiver
This is a complete upper receiver assembly in 300 Blackout, built on a 16-inch barrel. It represents a straightforward approach to modern rifle building—all the components you need above the lower receiver, ready to function as a cohesive unit.
What You Get
- 16-inch barrel in 300 Blackout caliber
- Complete upper assembly with bolt carrier group and charging handle
- Modular design compatible with standard AR-15 lower receivers
- Ready to shoot once paired with a lower receiver and magazine
Why 300 Blackout?
The 300 Blackout cartridge offers distinct advantages. It was purpose-built for the AR-15 platform and performs exceptionally well with suppressors. The round delivers substantial energy at close to intermediate ranges while remaining subsonic when loaded appropriately—a significant consideration for shooters concerned with noise signature.
Practical Considerations
A 16-inch barrel strikes a balance between velocity and handling. You retain adequate sight radius for iron sights or optics while maintaining a reasonably compact package. This length works well for home defense, tactical training, and general shooting sports.
This is a complete upper, meaning you need only a lower receiver to have a functional rifle. It's an efficient way to build or expand your AR-15 collection.
