The ZeroLok 15/19 is the ultimate in ARCA-integrated performance—the longest ARCA handguard available for AR-15 rifles. Stretching a full 19 inches, it’s purpose-built for precision rifles, SPRs, and long-range setups where every inch matters and every shot demands perfection.

Featuring two Picatinny top rail sections and an integrated offset red dot mounting platform (designed for use with the 51Fifty Red Dot Riser), the 15/19 is optimized for dual-optic configurations and adaptable mission loadouts. M-LOK slots run the entire length for complete modular freedom, while dual QD sling cups provide rapid, reliable sling integration. At the core is the patented ZeroLok ARCA system—delivering unshakable rigidity, sub-MOA repeatability, and absolute zero shift under the harshest recoil and conditions.

This is not just a handguard—it’s a statement. When you demand the longest, strongest, and most advanced ARCA solution on the market, the 15/19 delivers without compromise.

Full length dominance. Zero movement. ZeroLok.