Daniel Defense DDM4 V7S SBR, 5.56 NATO, AZ DPS Agency Configuration

Product Description

The Daniel Defense DDM4 V7S offered here is a semi-automatic 5.56 NATO NFA short-barrelled rifle built by Daniel Defense in an AZ DPS agency configuration, part number 02-128-10431-048.

Agency configurations are built to a law-enforcement customer’s written specification — here the Arizona Department of Public Safety — and differ from the catalogue rifle in ways the manufacturer does not always publish: furniture, trigger, rail length, markings, sometimes barrel details. We do not have verified figures for this part number’s barrel, gas system, rail or magazine.

What is not in question is the legal category. This is a short-barrelled rifle regulated under the National Firearms Act, and it is built to Daniel Defense’s normal manufacturing standards: AR-15 barrels cold hammer forged from Chrome Moly Vanadium steel, chrome lined, Mil-Spec heavy phosphate coated and HP/MPI tested; receivers CNC machined from 7075-T6 aluminium and Type III hard coat anodized; rails CNC machined 6061-T6 aluminium; bolt carrier groups M16 profile, Mil-Spec MP tested and chrome lined with a properly staked gas key; and the independently ambidextrous GRIP-N-RIP charging handle.

NFA short-barrelled rifle — and an agency configuration

Possession of this firearm requires a BATFE tax stamp and an approved NFA transfer through a dealer holding a Special Occupational Tax stamp. Western Sport is an SOT dealer. Being built to an agency specification changes none of that for a private buyer and confers no status on the purchaser — it is simply how the SKU was configured at the factory. Our NFA firearms category lists what else moves the same way.

Key Facts

• Brand / Model: Daniel Defense DDM4 V7S
• Manufacturer Part Number: 02-128-10431-048
• Configuration: Agency (AZ DPS)
• Legal category: NFA short-barrelled rifle (SBR)
• Action: Semi-automatic | Caliber: 5.56mm NATO
• Manufacturer: Daniel Defense
• Barrel length, profile, twist, gas system, rail, muzzle device and magazine: Send us a message to confirm for this part number
• Brand build standard — barrels: Cold hammer forged Chrome Moly Vanadium steel, chrome lined, Mil-Spec heavy phosphate coated, HP/MPI tested
• Brand build standard — receivers: CNC machined 7075-T6 aluminium, Type III hard coat anodized
• Brand build standard — rails: CNC machined 6061-T6 aluminium, Type III hard coat anodized
• Brand build standard — bolt carrier group: M16 profile, Mil-Spec MP tested, chrome lined, properly staked gas key
• Brand build standard — charging handle: Independently ambidextrous GRIP-N-RIP with anti-gas features

Buying an agency-configuration rifle

There is nothing wrong with it — agency guns are built to the same standards as commercial ones, sometimes with upgraded components — but know exactly what you are getting before the stamp is filed, because an NFA transfer is not a casual thing to redo. That is why we would rather confirm the configuration on the phone. Meanwhile, compare the MK18 configurations and our suppressors.

Ordering from Western Sport

Order online and we ship it to the licensed FFL dealer you choose near you — see how buying a gun online works. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.

Frequently Asked Questions

Q: What does AZ DPS configuration mean on this rifle?

A: It means Daniel Defense built this part number to a specification written for the Arizona Department of Public Safety rather than a catalogue specification. Agency builds can differ in furniture, trigger, rail, markings and sometimes barrel details.

Q: Does an agency configuration change how I buy it?

A: No. It is a short-barrelled rifle under the National Firearms Act, so it requires a BATFE tax stamp and an approved NFA transfer through a dealer holding a Special Occupational Tax stamp, exactly like any other SBR. Being an agency build confers no status on the buyer. Western Sport is an SOT.

Q: What barrel length does this DDM4 V7S have?

A: We do not have verified data tied to this part number, so we are not going to print a figure. On an NFA item, where the paperwork follows the specific serial number, guessing is worse than deferring.

Q: Why does this page carry fewer specifications than your other rifle pages?

A: Because we publish only what we can tie to the exact part number, and agency configurations are the least documented items in any catalogue. Manufacturer, model, calibre, legal category and build standards we can confirm.

Q: Is it built to the same standard as a commercial Daniel Defense rifle?

A: Yes, and sometimes with upgraded components. Daniel Defense applies the same manufacturing standards across the line: cold hammer forged Chrome Moly Vanadium barrels that are chrome lined, heavy phosphate coated and HP/MPI tested, CNC machined 7075-T6 receivers, and M16 profile MP tested bolt carrier groups.

Q: How does the transfer work?

A: Through a licensed FFL that also holds an SOT, with an approved NFA transfer and tax stamp. Western Sport is both, so we can complete the whole process in house.