The Daniel Defense DDM4 300 S-NM (brand part no. 02-122-17026-067) is a short-barrel AR-pattern rifle built on Daniel Defense’s DDM4 platform and chambered in .300 Blackout, a cartridge purpose-built for reliable suppressed and short-barrel performance. Daniel Defense DDM4 rifles are known industry-wide for cold-hammer-forged barrels and mil-spec fit, and the S-NM configuration continues that reputation in a compact, NFA-regulated package. It’s built for shooters who want a maneuverable, suppressor-ready platform for home defense or range use in tight spaces.

Key Specifications

• Built on the DDM4 AR-15 platform, giving it broad compatibility with standard AR magazines, optics, and accessories.
• Chambered in .300 Blackout, a cartridge engineered to perform well through short barrels and with a suppressor attached.
• Configured as a short-barrel rifle (SBR), a Title II firearm regulated under the National Firearms Act.

Frequently Asked Questions

Is this an NFA item? Yes. As a short-barrel rifle, it’s a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

What caliber does the DDM4 300 S-NM run? It’s chambered in .300 Blackout, a cartridge built for Daniel Defense’s short-barrel-optimized AR platform.

Buy the Daniel Defense DDM4 300 S-NM Short-Barrel Rifle

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4, no federal transfer tax, and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through Daniel Defense‘s short-barrel rifle lineup and our Lubbock, Texas team will walk you through the transfer process.