Area 419 ARCA LOK M-LOK Rails

What Is ARCA LOK?

ARCA LOK is a hybrid mounting interface developed by Area 419 that combines the strength and precision of the traditional ARCA-Swiss dovetail rail with a locking serration system machined directly into the rail surface. Unlike smooth ARCA rails that rely entirely on clamp tension, ARCA LOK adds a mechanical engagement feature that keeps your gear from shifting under recoil or pressure. The result is a more secure, no-slip lockup between your rifle and tripod, barricade block, or rest—especially in dynamic shooting environments. Whether you're hunting, competing, or spotting, ARCA LOK delivers rock-solid support with faster, more confident engagement.

12", 6", and S.M.A.L. (Single M-LOK ARCA LOK)

Why We Carry These

Simple: Because nobody else is doing ARCA mounting this clean. The Area 419 ARCA LOK system takes the proven precision of ARCA Swiss-style rails and integrates it seamlessly into your M-LOK platform—without adapters, without guesswork, and without sacrificing rigidity. We use these ourselves and trust them across bolt guns, predator rigs, and lightweight AR builds alike.

Each rail is cut from 6061-T6 billet aluminum and anodized for durability, then machined for optimal slot spacing and grip profile. It’s built right. If you’re serious about using tripods, clamps, or barricades as part of your shooting setup—these are the rails you want.

Product Options

Option 1: Area 419 12” M-LOK ARCA Rail

• Full-length precision ARCA LOK rail

• Covers nearly the entire bottom surface of long handguards

• Compatible with any standard ARCA interface

• Ideal for long-range platforms or bolt guns with extended forends

• Length: 12"

• Weight: Approx. 6.1 oz

• Mounting: Includes 5 M-LOK attachment points

• Material: 6061-T6 Aluminum

• Finish: Type III Hardcoat Anodized

Ally Notes: This one is perfect for bolt guns or gas guns like 6 ARC builds with full-length handguards. Great for field tripod use or barricade support—this is the do-it-all solution for full-length contact without flex.

Option 2: Area 419 6” M-LOK ARCA Rail

• Mid-length ARCA LOK rail

• Perfect for shorter ARs or compact chassis setups

• Lightweight, rugged, and no-nonsense

• Length: 6"

• Weight: Approx. 3.1 oz

• Mounting: Includes 3 M-LOK attachment points

• Material: 6061-T6 Aluminum

• Finish: Type III Hardcoat Anodized

Ally Notes: This is our go-to for short barrels or shorter handguards—like 11.5” or 12.5” AR15s, or chassis bolt guns with limited M-LOK space. Fast to install, rock solid under recoil, and clean in the hand.

Option 3: Area 419 S.M.A.L. (Single M-LOK ARCA LOK)

• Compact 2-slot ARCA LOK section

• Designed to take up as little room as possible while still offering a reliable interface

• Length: 3.3"

• Mounting: 2 M-LOK slots

• Material: 6061-T6 Aluminum

• Finish: Type III Hardcoat Anodized

Ally Notes: This one’s for the spotters, short AR builds, or bolt guns where you want a dual-interface setup—ARCA near the magwell for tripod support, and a Pic section out front for bipods. Use one or two depending on your layout.

Compatibility

• Universal fit to all true M-LOK handguards and chassis

• Works with all ARCA-style clamps and accessories (including RRS, Leofoto, Two Vets, etc.)

• NO adapters or proprietary interfaces needed

What’s Included

• ARCA rail of your choice (12", 6", or S.M.A.L.)

• All necessary mounting screws and M-LOK T-nuts

Installation Notes

Mounts to any M-LOK compatible surface with included hardware. Use medium threadlocker for best results. Confirm alignment down the bore centerline for optimal tripod clamp engagement.

Final Thoughts

When it comes to locking your rifle into a tripod or barricade support, rigid mounting matters. The Area 419 ARCA LOK system gives you that without gimmicks or fragile bolts. These are zero-fail tools, backed by some of the best machining in the game.

Ally Munitions Notes

• The 12" rail is ideal for full-length setups like long-range AR builds or bolt guns with extended handguards

• The 6" rail shines on shorter ARs and bolt guns

• The S.M.A.L. rail is a perfect option for dual-use setups — front pic + rear ARCA, or compact tripod-only rigs

We use these in our own builds, and we don’t cut corners. These pass the field test.

Legal Disclaimer

• You are responsible for confirming M-LOK compatibility with your handguard or chassis before ordering

• Installation should be performed with proper torque tools

• Do not overtighten M-LOK fasteners — torque to spec

• Area 419 and Ally Munitions are not liable for improper installation or use