Daniel Defense DDM4 MK18 10.3" Pistol with Law tactical SB Brace

Daniel Defense DDM4 MK18 Pistol with Law Tactical SB Brace

The Daniel Defense DDM4 MK18 is an AR15 style pistol inspired by the original MK18, a design that has become extremely popular within the law enforcement and special operations communities. Equipped with the SB Tactical SOB Pistol Stabilizing Brace and the Law Tactical GEN3M folding stock adapter, this pistol is classified as a pistol rather than a short barreled rifle, meaning it does not require ATF approval or a tax stamp under NFA regulations.

• Barrel Length: 10.3 inches, Cold Hammer Forged, Government profile
• Twist Rate: 1:7
• Barrel Steel: Chrome Moly Vanadium, chrome lined, mil-spec heavy phosphate coated, HP/MPI tested
• Handguard: Daniel Defense MK18 RIS II, FDE
• Rail: Picatinny quad rail, the same style provided to USSOCOM
• Gas System: Carbine length, direct impingement, low profile gas block
• Muzzle Device: Daniel Defense flash suppressor, 17-4 PH stainless steel, salt bath nitride finished
• Bolt Carrier Group: M16 profile, chrome lined, MP tested
• Buffer: H buffer
• Charging Handle: Ambidextrous GRIP-N-RIP
• Brace: SB Tactical SOB Pistol Stabilizing Brace
• Receiver Extension: AR pistol receiver extension with Law Tactical GEN3M folding adapter
• Pistol Grip: Daniel Defense, glass filled polymer, soft touch overmolding, Mil Spec Plus Brown
• Rail Panels: Daniel Defense Santoprene, heat resistant to 300 degrees Fahrenheit
• Origin: Made in the USA

The MK18 RIS II features the Bolt-Up System and has been rigorously tested prior to fielding by USSOCOM, giving this pistol a genuine pedigree rooted in real world military use. This pistol comes equipped with the ergonomic Daniel Defense pistol grip, featuring an integral trigger guard and soft touch overmolding for secure, comfortable handling.

CQB Heritage in a Folding Package

The Daniel Defense MK18 Pistol brings the same 10.3 inch Cold Hammer Forged barrel length commonly used for close quarters battle operations into a compact, foldable pistol format. The Law Tactical GEN3M folding stock adapter allows the SB Tactical SOB brace to fold along the receiver, making the pistol dramatically easier to store or transport while retaining full functionality once unfolded. This combination gives shooters a genuinely mission proven barrel length paired with modern folding convenience.

Receiver and Rail Construction

Both the upper and lower receivers are mil-spec, CNC machined from 7075-T6 aluminum and Type III hard coat anodized for durability. The lower receiver includes an enhanced flared magazine well and a rear receiver QD swivel attachment point, while the upper features indexing marks and M4 feed ramps. 

The MK18 RIS II handguard is CNC machined from 6061-T6 aluminum in a Type III hard coat anodized FDE finish, fitted with Daniel Defense Santoprene rail panels that remain heat resistant up to 300 degrees Fahrenheit for comfortable handling even after extended firing strings.

Daniel Defense DDM4 MK18 Reliability Features

The bolt carrier group is M16 profile, chrome lined, MP tested, and built with a properly staked gas key for dependable cycling. The gas system uses a low profile gas block CNC machined from 4140 hardened steel with a matching heavy phosphate coating, running carbine length direct impingement operation paired with an H buffer. 

The independently ambidextrous GRIP-N-RIP charging handle accommodates both left and right handed shooters, rounding out a pistol built for serious use by professionals and enthusiasts who want proven MK18 heritage in a folding, transport friendly package.