Diamondback 556M16M50B8R 5.56x45mm NATO 16" Black Nitride Chrome Moly Vanadium Steel Rifle
Diamondback
The Geissele Automatics 5.56x45mm NATO 14.50" barrel is a drop-in replacement barrel built for AR-15 shooters who demand proven reliability and shot-to-shot consistency. Designed with M4 feed ramps, this barrel works seamlessly with standard AR platforms and feeds everything from standard ball ammo to specialized loads without hesitation. The combination of chrome-lined steel and chrome-moly vanadium steel construction gives you a barrel that resists corrosion from extended shooting sessions and hard use in the field or at the range.
Geissele Automatics has built a reputation for precision engineering and rigorous quality control. This 14.50" barrel length strikes a practical balance for intermediate-range work—long enough to generate full velocity from 5.56 NATO while staying short enough for handy handling in close-quarters drills, tactical work, or hunting in brush. Whether you're building a new upper receiver or refreshing an existing one, this barrel gives you the accuracy and durability Geissele is known for.
The M4 feed ramp design ensures reliable chambering across a wide variety of ammunition. Chrome lining inside the bore protects against corrosion and extends barrel life, while the chrome-moly vanadium steel construction provides the strength needed to handle repeated firing cycles and pressure spikes. This is a serious barrel for serious shooters who won't compromise on component quality.
| Caliber | 5.56x45mm NATO |
| Barrel Length | 14.50 inches |
| Material | Chrome-lined steel / Chrome-moly vanadium steel |
| Feed Ramps | M4 feed ramps |
| Brand | Geissele Automatics |
| Part Number | 052985 |
Yes. This is a drop-in replacement barrel designed for standard AR-15 platforms. It uses M4 feed ramps, which are compatible with most modern AR receivers and bolt carrier groups.
Chrome lining protects the bore from rust and corrosion, especially important if you shoot in wet conditions or store the rifle for extended periods. It also helps extend the overall service life of the barrel.
A 14.50" barrel balances velocity, accuracy, and handling. It's suitable for tactical training, mid-range precision shooting, and hunting applications where you want reliable performance without excessive length. Your specific use case—target shooting, defensive work, hunting—will determine if it's the right fit for your needs.
Geissele Automatics is the manufacturer. They're known for precision AR components built to military and civilian standards.