Scalarworks LEAP/03 Aimpoint ACRO Mount Black 1.57in. The re-designed clamp has discreet hardened steel pins and a stopper to indicate when it's sufficiently open to clear a Picatinny rail. Specifications for Scalarworks LEAP/03 Aimpoint ACRO Mount: Manufacturer: Scalarworks Finish: Nitrided Fabric/Material: 7075-T6 Aluminum/4140H Steel Red Dot Sights-Footprint: Aim Point Acro Optic Cut: Not Applicable Condition: New Features of Scalarworks LEAP/03 Aimpoint ACRO Mount Quick-detach mount - Leap mount features an even stronger base with a forward lean to provide more room for magnifiers and chamfered side pockets for improved thumbscrew access. Leap mounts hold and return to zero under any condition. Engineered to be the lightest Aimpoint mount without compromising an ounce of strength. The Leap has no protruding levers bolts or knobs to rap your knuckles or get caught on clothing gear and surroundings. The world's most efficient quick-detach mechanism. Package Contents: Scalarworks LEAP/03 Aimpoint ACRO Mount T-10 BIT Scalarworks SW0310: LEAP/03 Aimpoint ACRO Mount Black 1.57in