Daniel Defense Delta 5 20" .308 Win Heavy Palma Barrel, 1:10 Twist, 5/8"-24 Thread, Cold Hammer Forged, Cobalt

The Daniel Defense Delta 5 20" .308 Win Heavy Palma Barrel gives you true modularity in a precision bolt-action rifle. If you own a Delta 5 and want to switch calibers or just have a fresh, accurate barrel on hand, this is the cleanest solution available—no gunsmith trip required. Daniel Defense engineered these barrels with the same cold hammer forging process that built their reputation for accuracy and durability in AR platforms, then adapted it for bolt-action shooters who value quick barrel swaps and factory-set headspace.

The barrel mounts via a barrel extension installed and headspaced at the Daniel Defense factory, so you're getting consistent, correct headspace every time. Swapping is genuinely simple: remove the barreled action from your stock, loosen the barrel nut with the included wrench, pull the old barrel, thread on the new one, torque it down, and reinstall the assembly. The whole job takes minutes. The Heavy Palma profile is built for accuracy work and longer-range shooting, and the cobalt Cerakote H-Series finish delivers both looks and protection against corrosion.

This .308 Win barrel is threaded 5/8"-24 for suppressors or muzzle devices, wears a 1:10 twist rate suited to a broad range of .308 loads, and tips the scales at 1.48 lbs. Whether you're building out a versatile rifle or adding a dedicated .308 barrel to your Delta 5 stable, you're getting the kind of precision hardware that Daniel Defense is known for—no compromises, no guesswork.

Key Features

• Factory-set headspace—correct every time, no gunsmith needed
• Cold hammer forged for accuracy and longevity
• Tool-free barrel swap in minutes using included barrel nut wrench
• Heavy Palma profile optimized for precision and long-range shooting
• Cobalt Cerakote H-Series finish for corrosion resistance and durability
• 5/8"-24 threaded muzzle for suppressors and accessories

Specifications

Frequently Asked Questions

Is this barrel compatible with all Delta 5 rifles?

This barrel is designed for the Daniel Defense Delta 5 platform via the Delta 5 barrel extension system. It will work with any Delta 5 rifle.

Do I need a gunsmith to install this barrel?

No. The barrel comes with a barrel nut wrench and simple instructions. Since headspace is set at the factory during extension installation, you simply remove the old barrel, install the new one, torque the nut, and reassemble. Most shooters complete the swap in minutes.

What is included with this barrel?

The barrel comes with a barrel nut wrench for easy installation and removal.

What twist rate does this barrel have and what ammunition does it stabilize?

This barrel features a 1:10 twist rate, which is the standard for .308 Winchester and will stabilize a wide range of .308 loads.