AREA 419 419-ALK-MK22 ARCALOCK RAIL MK22

The AREA 419 ARCALOCK RAIL MK22 is a precision mounting system built for shooters who demand repeatable accuracy and solid interface integrity. Whether you're in Daly City or anywhere across California, understanding your firearm setup starts with knowing local regulations. Check out our guide to California firearm laws before making upgrades.

ARCALOCK interface and rail geometry

The MK22 rail delivers a standardized mounting platform engineered for precision optics and accessory placement. ARCALOCK geometry ensures repeatable zero retention and eliminates play between rail and mounted components. Built for shooters running modern AR platforms, this rail system integrates cleanly with existing infrastructure. For handgun-specific compliance questions, our team maintains a full California-compliant handgun catalog to help you navigate your options. Visit our gun store in Sunnyvale for our full catalog.

Frequently asked questions

What optics and accessories work with the ARCALOCK MK22 interface?

The MK22 accepts any ARCALOCK-compatible optics, mounts, and accessories. ARCALOCK is a standardized interface, so you can mix components from multiple manufacturers without compatibility issues.

How much does the MK22 rail weigh on a complete upper?

The MK22 ships at 0.57 pounds. Final upper weight depends on your barrel, bolt carrier group, and other components. It's designed as a lightweight option for builders watching total system mass.

Does TacticCAL help with CA compliant firearms?

Yes — TacticCAL specializes in California-compliant handguns from the DOJ Roster and PC §32100 exempt single-action revolvers. Find FFL dealer Palo Alto at TacticCAL.