Daniel Defense Rankin Industries 300s Pistol w/ Law Tactical Folder

Product Description

The Daniel Defense Rankin Industries 300s Pistol w/ Law Tactical Folder is a hand-assembled, compact powerhouse built for shooters who demand serious energy in a portable package. Western Sport’s Rankin Industries shop assembles each pistol around a cold hammer-forged 10.3″ barrel specifically tuned for .300 AAC Blackout performance.

Additionally, this configuration pairs genuine Daniel Defense components with a Daniel Defense RIS III 9.5″ free-float M-LOK handguard featuring the patented 6-bolt Bolt-Up System. This ensures a rock-solid, repeatable zero that holds up through years of tactical use and suppressed fire.

Furthermore, the included Law Tactical Folding Stock Adapter lets the receiver extension and brace fold to the side. This space-saving feature transforms the pistol for storage, transport, and vehicle carry without sacrificing stability during live fire. Finally, every Daniel Defense firearm ships hand-assembled, quality-tested, and fired before delivery—Western Sport’s commitment to excellence starts with the factory.

Caliber Power in a Short-Barrel Package

The .300 AAC Blackout cartridge delivers significantly more energy than 5.56 from a short barrel, especially when paired with a suppressor. You get rifle-class terminal performance in a pistol-length platform designed for real-world deployment.

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 Tuned for .300 Blackout, Salt Bath Nitride Treated, HP/MPI Tested
• Gas System: Pinned Low-Profile Gas Block, CNC Machined of 4140 Hardened Steel, Mil-Spec Heavy Phosphate Coating, Pistol-Length, Direct Impingement
• Muzzle Device: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished, 5/8×24 TPI Threads
• Handguard: Daniel Defense RIS III 9.5, Patented 6-Bolt Bolt-Up System, CNC Machined of 6061-T6 Aluminum, M-LOK Attachment
• 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 is a trusted local source for Daniel Defense builds, backed by knowledgeable staff who understand this platform inside and out.
• Our Rankin Industries custom shop hand-assembles each pistol with genuine Daniel Defense parts and rigorous quality assurance before it ships to you.
• Competitive pricing on premium components: you’re buying factory-direct expertise without middleman markup.
• Ongoing support and advice after your purchase—we stand behind every pistol we build and are here for your questions on accessories, maintenance, and performance tuning.

Frequently Asked Questions

Q: What ammunition performs best in .300 AAC Blackout from this 10.3″ barrel?

A: Subsonic rounds (220 grain and heavier) pair perfectly with suppressors for quiet, reliable cycling. Supersonic loads deliver higher velocity and energy but generate more noise without a suppressor. We recommend testing both to match your mission.

Q: What optics, lights, and accessories work with the Daniel Defense RIS III M-LOK handguard?

A: The M-LOK slots accept any M-LOK-compatible accessory: red dots, magnifiers, lights, slings, and tactical grips mount directly to the rail. The handguard also features seven Picatinny slots for maximum modularity and quick reconfiguration.

Q: How does the Law Tactical Folding Stock Adapter benefit this pistol’s usability?

A: The folder collapses the brace and receiver extension to the side, cutting length in half for compact storage and vehicle carry. You retain full stability and control during shooting—the adapter simply gives you flexibility when you need portability.

Q: What comes in the box with this pistol, and what’s the warranty?

A: You receive the pistol with SB Tactical stabilizing brace, Law Tactical Folding Stock Adapter, and documentation. Daniel Defense stands behind every firearm with full manufacturer support; Western Sport provides local warranty service and troubleshooting guidance.

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

A: The RIS III is Daniel Defense’s next-generation free-float handguard. It uses a patented 6-bolt Bolt-Up System for a more secure, repeatable zero than older quad-rail designs. Furthermore, M-LOK slots run along the rail for mounting lights, lasers, and grips.

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.

Additional information