Dd Bbl Assy 5.56 1-7 14.5" Lw Mid

The Daniel Defense DD Bbl Assy 5.56 1-7 14.5" LW Mid is a cold hammer-forged rifle barrel assembly engineered for professional-grade accuracy and durability in tactical, law enforcement, and military applications. This mid-length gas system barrel delivers the performance demanded by operators who depend on their rifles in high-stress environments where reliability and precision are non-negotiable. The 14.5-inch profile balances velocity retention with compact handling, making it ideal for close-quarters work, vehicle operations, and dynamic entry scenarios.

Cold hammer forging, a proven metallurgical process used across military arsenals for decades, applies intense hydraulic pressure via opposing carbide steel hammers to forge the barrel blank. This hammering process eliminates inconsistencies in the steel matrix, resulting in a denser, more uniform grain structure that directly correlates to longer barrel life and tighter shot groups. The 1-7 twist rate stabilizes a full spectrum of 5.56mm ammunition—from 55-grain M193 to heavy 77-grain match loads—while the lightweight (LW) designation reduces overall rifle mass without sacrificing structural integrity. The mid-length gas tube provides a moderate impulse cycle, reducing bolt carrier velocity and wear compared to carbine-length systems, while maintaining reliable function across suppressed and unsuppressed applications.

This barrel assembly suits operators building precision 5.56 platforms, upgrading existing rifles, or establishing duty weapons where sub-MOA accuracy is expected. Installation requires standard AR-15 armorer-level tools and headspace verification; the barrel threads accept industry-standard muzzle devices (compensators, flash hiders, suppressors) with 1/2x28 TPI. Weighing 1.69 pounds and measuring 14.5 inches in length, it integrates seamlessly into mid-length carbines and compact rifle builds without adding unnecessary mass. Operators in law enforcement, military units, and competitive shooting disciplines rely on Daniel Defense barrels for their proven track record of accuracy maintenance over thousands of rounds and years of service.