Daniel Defense DDM4 PDW Pistol .300 AAC Blackout 7-inch Black

Description

The Daniel Defense DDM4 PDW Pistol .300 AAC Blackout 7-inch Black is a compact, hard-hitting AR-style pistol built for tight quarters and rough country. Chambered in .300 Blackout, this 7-inch cold hammer-forged barreled platform is ready for subsonic or supersonic loads right out of the box. It ships with a single 30-round magazine and a Maxim Defense CQB pistol brace for stable, one-handed control. If you need a tool that tucks into a truck cab, saddle scabbard, or pack without giving up stopping power, this is it.

Manufacturer	Daniel Defense
Model	DDM4 PDW Pistol
Material	7075-T6 Aluminum receiver, Chrome Moly Vanadium barrel (per manufacturer specs)
Compatibility	.300 AAC Blackout magazines, standard AR-15 lower parts (with PDW buffer system)
Finish	Black hardcoat anodized
Weight	5.3 lbs (with brace, per manufacturer specs)
Condition	New

Key Features

• 7-inch Cold Hammer-Forged Barrel – Why it matters: Cold hammer-forging work-hardens the steel for extreme durability and accuracy, even under sustained fire. The 1:7 twist stabilizes both 110-grain supersonic and 220-grain subsonic rounds.
• Maxim Defense CQB Pistol Brace – Why it matters: This adjustable brace gives you a solid cheek weld and three-position length-of-pull, so you can shoot one-handed or braced against your shoulder for precise follow-up shots.
• MFR XL M-LOK Handguard (6-inch) – Why it matters: The free-float design keeps barrel harmonics clean for accuracy, and the M-LOK slots let you mount lights, lasers, or a foregrip without adding bulk.
• Linear Compensator – Why it matters: It directs blast and noise forward, away from your face and the shooter next to you—critical in confined spaces like a barn or vehicle.
• Threaded Muzzle (5/8×24) – Why it matters: You can mount a suppressor or brake in seconds, making this pistol suppressor-ready from the factory.

Who It’s For

This pistol is for ranchers, rural workers, and utility buyers who need a compact, reliable firearm for predator control, property defense, or truck gun duty. It fits in tight spaces—ATV racks, saddlebags, or behind the seat of a pickup—and delivers .30-caliber energy without the length of a full rifle. If you work land that demands a tool that’s always ready and easy to stow, this is your rig.

Pros / Cons

• Pros: Compact 19-inch overall length (brace collapsed); suppressed-ready with included compensator; cold hammer-forged barrel outlasts button-rifled barrels by thousands of rounds; Maxim brace provides adjustable support for different shooting positions.
• Cons: .300 Blackout ammunition is more expensive than 5.56; PDW buffer system limits aftermarket stock/brace options; the 7-inch barrel loses velocity on supersonic loads compared to a 10.5-inch or longer barrel.

Comparison: DDM4 PDW vs. Zev Technologies OZ9 vs. Geissele Super Duty Pistol

	Daniel Defense DDM4 PDW	Zev Technologies OZ9	Geissele Super Duty Pistol
Caliber	.300 AAC Blackout	9mm	5.56 NATO
Barrel Length	7 in	5.28 in	11.5 in
Brace	Maxim Defense CQB	None (pistol only)	SBA3 (on pistol models)
Weight	5.3 lbs	1.8 lbs (unloaded)	6.8 lbs (with optic)
Best Use	Suppressed truck gun, predator control	Concealed carry, competition	Duty rifle, home defense

FAQ

Is the Daniel Defense DDM4 PDW NFA-regulated?

No. It ships as a pistol with a brace, so it is not classified as a Short-Barreled Rifle (SBR) under federal law. You can legally own it without a tax stamp, but check your state and local laws.

Can I use standard AR-15 magazines with this pistol?

Yes. It takes standard AR-15 .300 Blackout magazines. The included 30-round magazine is a standard GI-style mag. No special PDW mags needed.

What is the effective range of this 7-inch .300 Blackout pistol?

With supersonic loads, expect reliable accuracy out to 200 yards. Subsonic rounds are effective to about 150 yards. The 1:7 twist handles both well.

Does the Maxim brace adjust?

Yes. It has three positions: collapsed, mid, and extended. Pull the lever to slide the brace in or out for your preferred length of pull.

What twist rate does the barrel have?

1:7 twist. This stabilizes a wide range of bullet weights, from 110 grains up to 220 grains.

Trust & Delivery

• ✓ Nationwide delivery to all 50 states
• ✓ Ships within 1-2 business days
• ✓ 30-day return policy
• ✓ Secure checkout

Last updated: April 2026

AR Pistols | .300 Blackout Firearms | Daniel Defense Firearms