Arisaka Defense MCX ZRC Zero Retention Clamp for Sig MCX, MI Standard, Black

The patented Arisaka Zero Retention Clamp (ZRC) is designed to mitigate zero shift for lasers and iron sights mounted on handguards.

• Uses exterior clamps that thread into a specialized U-bracket
• The U-bracket engages the extended upper receiver beneath the handguard to secure it along two axes
• Helps minimize or eliminate zero shift when the rifle is shouldered
• U-bracket avoids contact with the barrel or gas system to preserve a free-floated barrel configuration
• Contoured clamps help minimize interference during handguard grip

Notes:

• Not compatible with the Rattler
• MCX Virtus and Spear LT handguards may lack adequate upper receiver security (can cause flex if not properly secured).