Area 419 Arcalock 12'' M-Lok Dovetail Rail 16 X 2.5 2.5" Black
$100.00
The Area 419 Arcalock 12'' M-Lok Dovetail Rail is a precision rifle accessory rail built for shooters who demand rock-solid stability under field conditions. Unlike standard friction-based ARCA dovetail rails that can shift when pressure is applied, the Arcalock uses serrated side surfaces that interface with Area 419's proprietary clamp design to mechanically lock in place—eliminating the drift that can happen on a barricade or when bags shift during a shot. At 12 inches long, it spans the full length of a precision stock forend, giving you maximum real estate for mounting bags, accessories, and barricade stops without adding bulk. It weighs just 4.1 ounces, so it won't slow you down on long days in the field or at the range.
Built from 6061-T6 aluminum and manufactured in-house on USA-made CNCs, the Arcalock meets the RRS 1.5'' dovetail standard, meaning your existing lever clamps will fit. Every edge is radiused and chamfered—a detail that speaks to Area 419's precision manufacturing philosophy—and it's finished in Type 3 Hard Coat anodize for durability. The serrated sides are not sharp and won't damage bags or tear your hands. The rail is backward compatible with standard ARCA accessories, though locking function requires an Area 419 clamp.
The underside features M-LOK slots, so you can attach M-LOK accessories directly to the rail itself for even more modularity. The rail ships with all M-LOK mounting hardware included. Note: This rail requires 6 consecutive M-LOK slots on your stock to mount securely; if your chassis has fewer available slots, a universal M-LOK rail with attachment nuts may be a better fit.
Key Features
- Serrated side surfaces lock mechanically into Area 419 clamps—no slipping under pressure
- 12 inches of ARCA dovetail surface across the full forend length
- Featherweight at 4.1 ounces
- RRS 1.5'' dovetail standard compatible with standard lever clamps
- M-LOK slots on underside for additional accessory mounting
- Radiused and chamfered edges—no sharp corners or burrs
- Type 3 Hard Coat anodize for extended durability
- Fully USA-manufactured from USA-sourced 6061-T6 aluminum
- Backward compatible with standard ARCA accessories
- Includes all M-LOK mounting hardware
Specifications
| Brand | Area 419 |
| Product Name | Arcalock 12'' M-Lok Dovetail Rail |
| Length | 12 inches |
| Weight | 4.1 ounces |
| Material | 6061-T6 Aluminum |
| Finish | Type 3 Hard Coat Anodize |
| Dovetail Standard | RRS 1.5'' Dovetail |
| Attachment Method | M-LOK (requires 6 consecutive slots) |
| Color | Black |
| Mounting Hardware | M-LOK hardware included |
Frequently Asked Questions
What M-LOK stocks will this rail fit?
The Arcalock requires 6 consecutive M-LOK slots on your stock to mount securely. If your chassis or stock has fewer consecutive slots available, Area 419 recommends using a 12'' universal rail with M-LOK attachment nuts instead.
Will standard ARCA accessories work on this rail?
Yes. The Arcalock is backward compatible with standard ARCA accessories and will accept any lever clamps that fit the RRS 1.5'' dovetail standard. However, the mechanical locking feature that prevents slipping requires an Area 419 clamp specifically.
What comes in the box?
The rail ships with all M-LOK mounting hardware included, ready to attach to your stock.
Is this rail compatible with barricade stops?
The Arcalock dovetail surface accepts standard ARCA barricade stops and accessories. When paired with an Area 419 clamp, the serrated side surfaces lock mechanically to prevent the rail—and any barricade stop mounted to it—from shifting under pressure.
