DANIEL DEFENSE MK18 PISTOL LAW TACTICAL

Product Description

The DANIEL DEFENSE MK18 PISTOL LAW TACTICAL brings proven special operations engineering into a compact, dependable 5.56 NATO platform. Built on Daniel Defense’s legendary MK18 design—the same configuration trusted by U.S. special operations units—this pistol delivers precision, reliability, and real-world versatility in a manageable size.

At its core, this pistol features a cold hammer forged 10.3″ barrel paired with a carbine-length direct impingement gas system engineered for consistent cycling in short-barrel configurations. The RIS II MK18 handguard provides a full-length M-LOK rail platform for mounting lights, lasers, vertical grips, and optics exactly where you need them.

Every Daniel Defense firearm ships hand-assembled, quality assured, and test-fired at the factory. Additionally, the included SB Tactical SBA3 stabilizing brace mounts to a 1.15″ pistol receiver extension. Furthermore, the Law Tactical Folding Stock Adapter lets you fold the entire assembly to the side for compact storage and transport without sacrificing any on-range capability.

Materials & Construction

• Lower Receiver: Daniel Defense Lower Receiver, CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized, with Enhanced Flared Magazine Well and Forward Receiver QD Sling Swivel Attachment Point
• Upper Receiver: Mil-Spec with Indexing Marks and M4 Feed Ramps, CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized
• Barrel: 10.3″ Government Profile, Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, Chrome Lined, Mil-Spec Heavy Phosphate Coated, HP/MPI Tested
• Gas System: Pinned Low-Profile Gas Block, CNC Machined of 4140 Hardened Steel, Mil-Spec Heavy Phosphate Coating, Carbine-Length, Direct Impingement
• Muzzle Device: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished, 1/2×28 TPI Threads
• Handguard: Daniel Defense RIS II MK18, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized, Picatinny Top Rail with KeyMod at 3/6/9 o’clock, Santoprene Rail Panels
• Bolt Carrier Group: M16 Profile Bolt Carrier Group, Mil-Spec MP Tested, Chrome Lined, with Properly Staked Gas Key
• Charging Handle: Daniel Defense GRIP-N-RIP Charging Handle — Body CNC Machined of 7075-T6 Aluminum, Handles & Latch CNC Machined of 6061-T6 Aluminum, Heavy Duty Stainless Steel Roll Pins, Type III Hard Coat Anodized
• Pistol Grip: Daniel Defense Pistol Grip, Glass-Filled Polymer with Soft-Touch Overmolding and Internal Storage Compartment
• Stabilizing Brace: SB Tactical SBA3 Pistol Stabilizing Brace, Adjustable Across 5 Positions, Mounted on Daniel Defense’s 1.15″ Diameter Pistol Receiver Extension
• Folding Stock Adapter: Law Tactical Folding Stock Adapter — one-button side-fold, auto-locks when unfolded, compatible with the factory receiver extension and brace

Specifications

This pistol ships from the factory with an SB Tactical pistol stabilizing brace attached to a pistol-length receiver extension, configured as a firearm — not a rifle. A 2024 federal court ruling vacated ATF’s 2023 rule that reclassified braced pistols as Short-Barreled Rifles (SBRs), and the government dropped its appeal of that ruling in 2025. As a result, a stabilizing brace alone no longer causes a pistol to be treated as an SBR under the National Firearms Act (NFA). As of 2026, ATF has proposed formally removing the old ‘redesigned to be fired from the shoulder’ factoring criteria, with public comments open through August 4, 2026. As configured and shipped, this pistol requires no NFA registration or tax stamp — only the standard ATF Form 4473 background check at transfer. Permanently configuring this firearm with a shoulder stock, however, would create an SBR requiring an approved ATF Form 1 before modification. Western Sport cannot advise on individual compliance — buyers are responsible for following all applicable federal and state law.

Why Buy from Western Sport?

• Western Sport’s staff are trained in Daniel Defense platforms and ready to answer your build questions.
• We offer competitive pricing on this complete pistol and its aftermarket parts ecosystem.
• Your purchase includes Western Sport’s commitment to ongoing support and gunsmith referrals for custom work.
• Local inventory means fast transfers, zero shipping delays, and immediate access to your firearm.
• We stand behind every sale with transparent warranty guidance and detailed product documentation.

Frequently Asked Questions

Q: What ammunition does the DANIEL DEFENSE MK18 PISTOL LAW TACTICAL fire, and how does 5.56 NATO perform in a 10.3″ barrel?

A: This pistol fires standard 5.56 NATO ammunition, the same cartridge used by military and law enforcement worldwide. In a 10.3″ barrel, you’ll see reliable cycling with quality factory loads. Moreover, the carbine-length gas system is specifically tuned for this short-barrel configuration to ensure consistent performance and reduced wear.

Q: What optics, lights, and accessories are compatible with the RIS II MK18 handguard?

A: The RIS II MK18 handguard uses M-LOK mounting slots, so any M-LOK-compatible optic, light, vertical grip, or sling attachment will mount directly. Additionally, standard Picatinny rail adapters let you use legacy optics and accessories. Furthermore, most AR-platform red dots, magnified optics, and tactical lights integrate seamlessly without additional hardware.

Q: Does this pistol include the Law Tactical Folding Stock Adapter, and why would I want it?

A: Yes, this configuration ships with the Law Tactical Folding Stock Adapter already installed on the receiver extension. The adapter lets the brace and extension fold to the side for compact carry in vehicles, bags, or storage. Therefore, you gain a full-length shooting platform while maintaining portability that a fixed configuration cannot match.

Q: What does this pistol include in the box, and what is the warranty?

A: Your purchase ships with the complete DANIEL DEFENSE MK18 PISTOL LAW TACTICAL, SB Tactical SBA3 stabilizing brace, Law Tactical Folding Stock Adapter, and Daniel Defense documentation. Daniel Defense backs this firearm with a lifetime warranty against manufacturing defects. Additionally, Western Sport handles all warranty claims and can connect you with authorized service if needed.

Q: What is the RIS II rail system on this pistol?

A: The RIS II (Rail Interface System II) is Daniel Defense’s free-float quad-rail handguard. It features a continuous top Picatinny rail for optics and sights. Additionally, KeyMod slots at the 3, 6, and 9 o’clock positions let you mount lights, lasers, and grips exactly where you need them.

Q: Will I need to file ATF paperwork or pay a tax stamp for this pistol’s brace?

A: No. As configured and shipped, this is a pistol with a stabilizing brace — not a Short-Barreled Rifle (SBR). ATF’s 2023 rule treating braced pistols as SBRs was vacated by federal courts in 2024, and the government dropped its appeal in 2025. Only the standard ATF Form 4473 background check applies at transfer, the same as for any other pistol.

Q: What does the Law Tactical Folding Stock Adapter do on this pistol?

A: This pistol includes a Law Tactical Folding Stock Adapter, which lets the receiver extension and stabilizing brace fold to the side of the receiver for compact storage and transport. A single button releases the fold, and the mechanism automatically locks back into place once unfolded. Folding does not change the barrel length, configuration, or NFA status of the firearm.

Also in the MK18 Family

DD M4 CARB MK18 SBR 556 10.3″ BRN  •  DD M4 CARB MK18 SBR 556 10.3″ BLK  •  Daniel Defense MK18 Black SBR  •  Daniel Defense MK18 RIII URG  •  Daniel Defense M4 URG MK18 Black  •  Daniel Defense M4 URG MK18 FDE  •  Daniel Defense MK18 RIII Rifle 10.3 SBR Black  •  Daniel Defense Rankin Industries MK18 Pistol FDE  •  Daniel Defense Rankin Industries MK18 RIII Pistol  •  Daniel Defense Rankin Industries MK18 Pistol Black with Law Tactical Folder

Additional Information

Additional information