The Cross Machine Tool HDM ARCA Swiss Style Rail 15″ is a premium, integrated AR-15 handguard designed for shooters who demand rock-solid stability and versatility. This free-floating rail combines a full-length ARCA Swiss profile at the 6 o’clock position with extensive M-LOK mounting options, making it ideal for precision rifles, long-range shooting, tripod/bipod setups, and tactical builds.
Crafted from high-quality materials for durability and lightweight performance:
- Rail: 6000 series extruded aluminum with Mil-Spec Type 3 Class 2 hard black anodizing
- Barrel Nut: 7075 aluminum, Type 3 Class 2 hard anodized
- Fasteners: 17-4PH cored stainless steel for superior strength
Key Features and Benefits:
- Integrated ARCA Swiss compatible rail at the bottom for quick, secure attachment to ARCA tripods and bipods—no adapters needed
- Free-floating design with shim-free installation for maximum accuracy and no barrel contact
- M-LOK slots at 1, 3, 6, 9, and 11 o’clock positions (plus additional flats) for accessories like lights, lasers, grips, and more
- Barrel nut diameter: 1.378″
- Inner diameter: Approximately 1.315″ (ensures clearance for most gas systems)
Easy installation with included barrel nut wrench; uses a captured cross-bolt system (similar to BCM/SLR—no barrel nut timing required)Length: 15″ — perfect balance for mid-length or rifle-length gas systems on AR-15/M16 platforms
Whether you’re building a precision gas gun, PRS competitor, hunting rifle, or tactical AR, this CMT HDM-A2 rail delivers exceptional rigidity, modularity, and ARCA-ready functionality without added bulk or adapters.
Upgrade your AR-15 today with the Cross Machine Tool HDM ARCA Swiss Style Rail 15″ — engineered for performance where it matters most.
By purchasing CMT AR-15 HDM ARCA Swiss Style Rail 15″ Black from our online store, you are guaranteed to receive a high-quality item. We work with trusted brands to offer shooting and hunting enthusiasts, both amateur and professional, quality products at a reasonable price. Choosing to buy from us means opting for quality and practicality
The actual appearance of the product may differ from the image on the website. For additional information about payment, delivery, and product specifications, please contact us by phone or email.










