Close up Macro Photo of the ARCALOCK RAIL

One tiny mistake can cost you everything. You've taken your breath and you're timing your rhythm. The wind calms, your target is in sight, and you squeeze the trigger—but your bipod shifts slightly, and the shot misses. That moment of instability just cost you big time. ARCALOCK was built to eliminate that exact problem. Its rock-solid locking system keeps your gear firmly in place, giving you the confidence to make every shot count.

What is ARCALOCK?

The ARCALOCK system was developed by Area 419—and to understand its origins, it’s important to recognize the historical context of the ARCA Swiss standard. Originally designed for cameras, the ARCA Swiss dovetail clamp became popular for mounting rifle bipods and tripods due to its versatility. However, the original design relied solely on friction for securing attachments, which could lead to instability under certain conditions.

Area 419 addressed this issue by creating the ARCALOCK system. By integrating a locking interface that eliminates slippage, they revolutionized the way accessories are mounted for precision shooting. This advancement solved the fundamental problem of traditional ARCA Swiss designs, providing a secure and repeatable solution for shooters who demand reliability.

A History of Daniel Defense's ARCALOCK System

For shooters looking to take full advantage of ARCALOCK, Daniel Defense integrated the innovative system originally developed by Area 419 . By addressing the common frustrations associated with traditional rail systems, the addition of ARCALOCK provides a solution for achieving unwavering stability. In the minds of many competitive shooters, this upgrade has solidified Daniel Defense’s dedication to pushing the boundaries of technological implementation, particularly with its integration into the Pro Chassis System.

The Problem with Traditional Mounting Systems

Traditional Picatinny and M-LOK rails, while widely used, often fall short in delivering the rock-solid stability required for precision shooting. Accessories can shift under recoil, and quick adjustments in the field are cumbersome. For shooters pushing their rifles to the limits, this inconsistency can be frustrating and detrimental to performance.

Why ARCALOCK?

  • Enhanced Stability: ARCALOCK rails feature a locking interface that prevents any forward or backward movement of mounted accessories, offering unparalleled stability.
  • Quick Adjustments: The design allows shooters to quickly slide and lock accessories into place without tools, making in-the-field adjustments seamless.
  • Versatility: Compatible with a variety of bipods and tripods, ARCALOCK provides unmatched flexibility for different shooting positions and terrains.

ARCALOCK and the Daniel Defense Pro Chassis System

For shooters looking to take full advantage of ARCALOCK, the Daniel Defense Pro Chassis System offers an elite-level upgrade for the DELTA 5 bolt-action rifle. This chassis is built from CNC-machined 6061-T6 aluminum, providing a lightweight yet durable foundation for precision shooting. Designed specifically for long-range competition like the PRS production class, this drop-in replacement integrates seamlessly with the DELTA 5 Stainless Steel Action and Cold Hammer Forged Barrel.

Key features include an integral ARCA Rail running the entire length of the lower rail, allowing shooters to easily and securely mount bipods and tripods. The ergonomic adjustable thumb rest, user-adjustable buttstock, and adjustable cheek riser give shooters the ability to fine-tune their setup for maximum comfort and accuracy. The chassis also offers M-LOK attachment points at six positions and ten sling swivel points, enhancing its adaptability for various shooting conditions.

A Note for Serious Shooters

Precision shooting isn't just about skill—it's about having gear that works with you, not against you. ARCALOCK delivers the kind of stability and adaptability that can make the difference between a near miss and a bullseye. Whether you're competing at the highest levels or pushing your personal best, investing in ARCALOCK-equipped rifles and the Daniel Defense Pro Chassis System gives you a competitive edge you can count on.

Don't let instability be the reason you fall short. Upgrade your setup, sharpen your precision, and dominate every shot.