Maxim Defense MXM49700 PDX-SD SCW 5.56 NATO Arid Dark Earth 1/2″x28

Description

The Maxim Defense MXM49700 PDX-SD SCW in 5.56 NATO and Arid Dark Earth is a compact AR pistol built for real work. Chambered in 5.56 and threading 1/2×28, it brings full-power rifle ballistics to a package that fits behind a truck seat or in a saddle scabbard. This is the maxim defense mxm49700 pdx-sd scw 5.56 nato arid dark earth 1/2×28, and it’s built for folks who need a short gun that runs hard and doesn’t quit.

Manufacturer	Maxim Defense
Model	MXM49700 PDX-SD SCW
Material	7075-T6 aluminum upper/lower receiver, CMC nitride-treated barrel (per manufacturer specs)
Compatibility	5.56 NATO / .223 Rem, standard AR-pattern magazines
Finish	Arid Dark Earth Cerakote
Weight	5 lbs 14 oz (as configured, per Maxim Defense specs)
Condition	New

Key Features

• SCW Buffer System – This is the heart of the gun. The Super Compact Weapon buffer cuts overall length by nearly 4 inches over a standard carbine tube, letting you run a 5.56 barrel under 8 inches without sacrificing reliability. Why it matters: you get a truck-friendly package that cycles like a full-size rifle.
• Integral Flash Hider – The PDX-SD comes with a welded-on flash hider that tucks inside a handguard extension. Why it matters: no added length, no snagging on gear, and it keeps the muzzle blast pointed downrange instead of back at you.
• Maxim Defense CQB Stock (pistol brace version) – The SCW pistol brace is compact, adjustable, and locks up tight. Why it matters: you get a solid cheek weld without the bulk of a standard brace, making it easier to shoulder in tight spaces.
• CMC Nitride Barrel – 7-inch barrel with a 1:7 twist, treated for corrosion resistance. Why it matters: you get consistent accuracy and a barrel that holds up to hard use in wet or dusty conditions.
• Arid Dark Earth Cerakote – This finish matches the dirt and brush of the West. Why it matters: it hides wear, resists scratches, and doesn’t glare in the sun like black does.

Who It’s For

This pistol is for ranchers, rural workers, and anyone who needs a short, hard-hitting tool for varmint control, predator defense, or vehicle carry. It’s not a range toy. If you’re the kind of person who needs a gun that can live under a seat, get dusty, and still run when you grab it, this is for you.

Pros & Cons

• Pros: Compact enough for truck or ATV storage; full 5.56 power; proven SCW buffer system; Cerakote finish matches arid terrain; reliable with quality ammunition.
• Cons: The 7-inch barrel means you lose some muzzle velocity compared to a 16-inch carbine – you’ll want to use 55-grain or heavier bullets for best performance on target. Also, the price is steep for a budget buyer.

Comparison

Feature	Maxim Defense PDX-SD	Zev Technologies OZ9	Geissele Super Duty Pistol
Caliber	5.56 NATO	9mm	5.56 NATO
Barrel Length	7 inches	4.5 inches	11.5 inches
Buffer System	SCW (proprietary)	Standard carbine	Geissele Super 42
Overall Length	~23 inches (brace collapsed)	~19 inches	~28 inches
Weight	5 lbs 14 oz	~2 lbs 8 oz	~6 lbs 2 oz
Finish	Arid Dark Earth Cerakote	Black nitride	Black anodized
Price	$3,525.08	~$1,800	~$1,900
Best For	Ranch/utility carry	Concealed/competition	General purpose carbine

FAQ

Is this legal to own in my state?

This is classified as a pistol under federal law and ships with a pistol brace. State laws vary – check your local regulations regarding barrel length, overall length, and NFA items. We ship to all 50 states, but you are responsible for compliance with state and local laws.

What kind of accuracy can I expect from a 7-inch 5.56 barrel?

With quality 55- or 62-grain ammunition, expect 2-3 MOA at 100 yards. The 1:7 twist stabilizes heavier bullets well. This is a utility gun, not a precision rifle, but it will put rounds on a coyote-sized target out to 200 yards.

Does the SCW buffer system work with standard AR lowers?

Yes, the SCW system is designed to drop into mil-spec lower receivers. The PDX-SD ships as a complete pistol, but the buffer tube and BCG are compatible with standard AR-15 lowers if you ever want to swap uppers.

What magazines does it use?

Standard AR-15/M16 magazines in 5.56 NATO. It runs well with Magpul PMAGs, Lancer L5AWM, and GI metal mags.

Trust & Service

• ✅ Nationwide delivery (all 50 states)
• ✅ Ships 1-2 business days
• ✅ 30-day returns
• ✅ Secure checkout

Looking for more? Check out our AR Pistols, AR Uppers, or AR Parts & Accessories.

Last updated: April 2026