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Daniel Defense Rankin Industries MK18 Pistol Black
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Sale!
$1,999.00Original price was: $1,999.00.$1,899.99Current price is: $1,899.99.
🚚 Ships to your local FFL — we handle the paperwork and coordinate with your dealer. Most firearms ship same or next business day. Local? Free in-store pickup in Roanoke, TX.
The Daniel Defense Rankin Industries MK18 Pistol Black is a purpose-built 5.56 NATO pistol engineered for accuracy, control, and real-world reliability. This configuration pairs Daniel Defense’s legendary cold hammer forged 10.3″ barrel with the RIS II MK18 handguard, delivering the compact footprint operators demand without compromising ballistic performance.
Additionally, this pistol is hand-assembled in-house by Western Sport’s Rankin Industries custom shop using genuine Daniel Defense components. Every Daniel Defense firearm undergoes rigorous quality assurance testing and is test fired before shipment, ensuring consistent performance from day one.
Furthermore, the carbine-length direct impingement gas system is tuned specifically for short-barrel cycling reliability. The SB Tactical SBA3 adjustable pistol stabilizing brace ships pre-installed, allowing comfortable shooting from the shoulder without additional configuration.
Compact Power Meets Tactical Precision
The RIS II MK18 handguard provides ample rail real estate for lights, lasers, and vertical grips. Indeed, this modular aluminum platform accepts standard tactical accessories, making customization straightforward for shooters who demand flexibility.
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
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
Specifications
SKU / MPN
DD-RI-23-004-08013-006
Product Type
Complete Pistol
Item Condition
New
Caliber
5.56 NATO
Finish
Black
Receiver Material
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
Handguard / Rail System
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
Muzzle Device
Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished, 1/2×28 TPI Threads
Stabilizing Brace
SB Tactical SBA3 Pistol Stabilizing Brace, Adjustable Across 5 Positions, Mounted on Daniel Defense’s 1.15″ Diameter Pistol Receiver Extension
Approx. Weight
6.0 lb
Approx. Overall Length
26.4″ (brace collapsed) – 29.4″ (brace extended)
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 Rankin Industries shop assembles every pistol in-house using verified genuine Daniel Defense components and rigorous quality control.
Our knowledgeable staff provides personalized guidance on 5.56 ammunition selection, optic mounting, and tactical configuration tailored to your mission profile.
Competitive pricing on hand-assembled builds reflects our direct relationship with Daniel Defense and efficient in-house assembly.
After-sale support includes expert technical advice, parts availability, and customization assistance from staff experienced with Daniel Defense platforms.
Local inventory means fast shipping and immediate replacement support if any issue arises within our warranty window.
Frequently Asked Questions
Q: What 5.56 NATO ammunition performs best in this 10.3″ barrel?
A: The short barrel favors mid-weight loads (62–77 grain) for optimal velocity and accuracy. Additionally, quality factory ammunition from Speer, Federal, or Hornady delivers reliable performance in this platform. However, always verify your specific load in a test session before committing to duty use.
Q: What red dots, lights, and slings are compatible with the RIS II MK18 handguard?
A: The RIS II platform accepts any Picatinny rail-mounted optic, light, and tactical accessory. Furthermore, standard AR pistol slings attach to the receiver, and most shooters add a light via the top or side rail for tactical flexibility. Indeed, the modular design supports everything from compact micro red dots to full-size night-vision-ready optics.
Q: How does this MK18 configuration differ from other Daniel Defense pistol options?
A: This hand-assembled Rankin Industries build specifically emphasizes the proven RIS II MK18 handguard and cold hammer forged 10.3″ barrel combination. Additionally, the tuned direct impingement gas system and SB Tactical SBA3 brace create a reliable, compact package optimized for urban and close-quarters performance.
Q: What comes in the box, and what is your warranty coverage?
A: This pistol ships with the SB Tactical SBA3 brace installed on a Daniel Defense 1.15″ pistol receiver extension, plus standard documentation. Furthermore, Western Sport stands behind every Rankin Industries build with our standard firearms warranty covering defects in assembly and material.
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.
HANDGUARD: Daniel Defense RIS II MK18, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized, Black
BRACE: None
PISTOL GRIP: Daniel Defense Pistol Grip, Glass Filled Polymer with Soft Touch Overmolding
RAIL PANELS: Daniel Defense Rail Panels made from Santoprene, heat resistant to 300° F.
Made in the USA!
All Daniel Defense products carry a 100% satisfaction guarantee against defects in original materials and workmanship. If your Daniel Defense product shows evidence of such defects, Daniel Defense will make every accommodation to fix, repair, or replace your product in the most expeditious manner possible. Daniel Defense does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer’s products. Be sure to retain your sales slip as proof of purchase date when making a claim.
Rankin Industries products carry a Lifetime Warranty.
Additional information
Features
MATERIALS & CONSTRUCTION LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized BARREL: Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 twist, 10.3″ Govt Profile, Chrome Lined, MP tested, and Mil-Spec Heavy Phosphate Coated GAS SYSTEM: Low Profile Gas Block CNC Machined of 4140 hardened steel with Mil-Spec Heavy Phosphate Coating, Carbine Length, Direct Impingement MUZZLE DEVICE: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished BOLT CARRIER GROUP: M16 Profile, Mil-Spec HP and MP Tested, Chrome Lined, Properly Staked Gas Key BUFFER: H Buffer SIGHTS: Sold Separately HANDGUARD: Daniel Defense RIS II MK18, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized FDE RECEIVER EXTENSION: Daniel Defense 1.15” Diameter Pistol Receiver Extension PISTOL GRIP: Daniel Defense Pistol Grip, Glass Filled Polymer with Soft Touch Overmolding RAIL LADDERS: 3 low profile ladders made from Santoprene, heat resistant to 300° F. Made in the USA!
All Daniel Defense products carry a 100% satisfaction guarantee against defects in original materials and workmanship. If your Daniel Defense product shows evidence of such defects, Daniel Defense will make every accommodation to fix, repair, or replace your product in the most expeditious manner possible. Daniel Defense does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer’s products. Be sure to retain your sales slip as proof of purchase date when making a claim.
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