Direct mount for Leupold DeltaPoint Pro or any optic with a similar footprint that offers an absolute co-witness and the Sidelok Advantage of toolless QD that maintains and returns to zero. Sidelok is a groundbreaking Quick Detach (QD) mounting system for optics. It eliminates the need for tools, levers, or oversized knobs, offering a simple push button design for securely mounting any optic to a picatinny rail. The system guarantees to maintain zero and ensures continuous return to zero when remounted in the same position as when the optic was zeroed. With an additional safety feature to prevent unintentional movement or detachment of the optic, Sidelok represents the future of optics mounts. SPECS: Width: 1.10″ Length: 2.825″ Weight: 2.7 ounces Features: Absolute Co-witness Finish: Black Anodized Compatibility: ADE Advanced Optics RD3-018 Spike | ADE Advanced Optics RD3-021 Nuwa | JP Enterprises JPoint | Leupold DeltaPoint Pro | Shield RMS | Shield RMSc | Shield RMSw | Shield RMSx | Shield SMS | Shield SMS 2.0 | Shield SMSc | Sig Sauer Romeo Zero | Sightmark Mini Shot A-Spec M3 | Swampfox Sentinel 1×16 | UTG OP3 Mini Micro |