Description

The Daniel Defense DDM4ISR is an AR-style integrally suppressed .300 Blackout rifle optimized for both subsonic and supersonic performance right out of the box. Unlike typical rifles that require a separate suppressor attachment, the ISR’s suppressor is permanently integrated and welded to the barrel, giving the firearm a legal 16″ overall barrel length (NFA) without classifying it as a Short Barreled Rifle (SBR). This design eliminates issues with improperly mounted cans and the need to re-zero when switching between suppressed and unsuppressed fire.

Built on Daniel Defense’s proven high-quality aluminum receivers and premium components, the DDM4ISR blends mil-spec reliability with modern features such as ambidextrous controls, a free-floating handguard with modular attachment points, and ergonomic furniture. It’s suitable for enthusiasts, tactical shooters, and precision shooters looking for a quiet, suppressed .300 Blackout platform with excellent build quality.

Specifications

General

• Model: Daniel Defense DDM4ISR

• Caliber: .300 Blackout (300 BLK)

• Type: Semi-automatic AR-style rifle with integral suppressor

• Finish: Black Cerakote on suppressor and components

• Made in: USA

Barrel & Suppressor

• Barrel length: 9″ cold-hammer forged profile (pinned/welded to suppressor)

• Integrated suppressor: Stainless steel, 17-4PH monolithic baffle; user-serviceable baffle core for cleaning.

• Overall legal length: 16″ due to integral suppressor, not classed as an SBR.