Daniel Defense DDM4 MK18 SBR, 5.56 NATO, Mil-Spec+, No Magazine

Product Description

The Daniel Defense DDM4 MK18, part 02-088-15028-067, is an NFA short-barrelled rifle in 5.56mm NATO with a 10.3-inch Government profile barrel and the MK18 RIS II quad rail, finished in Daniel Defense Mil-Spec+ and supplied without a magazine.

Daniel Defense gives the no-magazine build its own part number and changes nothing else: same barrel, same receivers, same assembly. Order the standard Mil-Spec+ MK18 SBR instead if you do not need it. Limits vary by state and by city or county and do change, so check what currently applies in your jurisdiction. Send us a message for help sourcing a compliant magazine, or see our magazine selection.

Key Facts

• Model: DDM4 MK18
• Manufacturer Part Number: 02-088-15028-067
• Legal category: NFA short-barrelled rifle
• Caliber: 5.56mm NATO
• Finish: Mil-Spec+
• Barrel: 10.3″, Government profile, 1:7 twist, Cold Hammer Forged, Chrome Moly Vanadium Steel, Chrome Lined, Mil-Spec Heavy Phosphate Coated
• Gas system: Carbine
• Muzzle: Daniel Defense Flash Suppressor, 1/2 x 28 TPI thread
• Rail: Daniel Defense MK18 RIS II, Picatinny
• Weight: 5.88 lbs
• Configuration: Supplied without a magazine

NFA Short-Barrelled Rifle

This part number is an NFA-regulated short-barrelled rifle and cannot change hands without a BATFE tax stamp and an approved transfer through a dealer holding a Special Occupational Tax stamp. Western Sport is an SOT and a licensed FFL; transfer through a licensed FFL is required. We state no wait times or tax amounts, and give no registration guidance.

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 is Mil-Spec+ on this MK18 short-barrelled rifle?

A: Mil-Spec+ is the Daniel Defense finish option applied to this part number. The firearm underneath is the same 10.3-inch MK18 short-barrelled rifle in 5.56mm NATO with the RIS II quad rail. If the exact shade matters to you, send us a message before ordering.

Q: Does the Mil-Spec+ version come with a magazine?

A: Not this part number. Daniel Defense supplies it with no magazine, which is how the rifle reaches buyers whose jurisdictions regulate magazine capacity. Send us a message to confirm what is in the carton before you order.

Q: Is the barrel treatment the same as other Daniel Defense MK18 builds?

A: The barrel is Chrome Moly Vanadium Steel, Cold Hammer Forged, Chrome Lined and Mil-Spec Heavy Phosphate Coated, with a Government profile and 1:7 twist. That specification does not change between the finish options; only the exterior colour of the rifle does.

Q: What paperwork does this SBR require?

A: A BATFE tax stamp and an approved transfer through a dealer holding a Special Occupational Tax stamp, because the 10.3-inch barrel makes it an NFA short-barrelled rifle. Western Sport is an SOT and licensed FFL. We do not state wait times or tax amounts.

Q: What magazine capacity should I order alongside it?

A: That depends entirely on what your own state and locality currently permit, and those rules change, so verify them before ordering. Once you know the limit that applies to you, send us a message and we will match an AR-15/M16 pattern magazine to the rifle.

Q: How much does the Mil-Spec+ MK18 SBR weigh?

A: This configuration weighs 5.88 lbs bare. The RIS II quad rail accounts for some of that, being a Picatinny system rather than an M-LOK handguard. Add an optic, a light and a loaded magazine and the carry weight rises appreciably over the listed figure.