Reptilia ARCA-S Handguard

The Reptilia ARCA-S Handguard brings true, direct-to-tripod capability to the AR-15 with an integrated ARCA interface machined directly into the handguard. Built for shooters who demand fast attachment, smooth fore-aft adjustment, and a stable shooting platform, the Arca interface puts tripod mounting and rifle positioning exactly where you need it.

At the heart of the design is Reptilia’s patented turnbuckle mounting system, providing a secure, repeatable lockup across standard M4 upper receivers without unnecessary bulk. The Arca-S handguard features a 2.8″ integrated Arca section at the rear of the handguard, where it meets the upper receiver, creating a rigid mounting point for direct tripod attachment while keeping the rest of the handguard streamlined and fully usable.

Full M-LOK compatibility is maintained throughout, giving you the flexibility to mount bipods, lights, and other accessories without compromising the Arca interface. The result is a purpose-built handguard that balances modularity, rigidity, and rapid tripod deployment in a lightweight package.

Proudly made in the USA, the Reptilia ARCA Handguard is backed by a lifetime warranty against manufacturing defects—built to perform and built to last.

Available in Black and FDE. 11.5″ coming soon.

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Barrel Nut and Turnbuckle Wrench
(Sold Separately)

• Barrel Nut Torque Spec: 50 ft.-lbs.
• Turnbuckle Torque Spec: Hand tight with red thread locker

Installation instructions available here