Sidelok is an innovative quick detach (QD) mounting system designed for optics, eliminating the necessity for tools, levers or oversized knobs. It features a straightforward push-button mechanism for securely attaching any optic to a picatinny rail. The system ensures the maintenance of zero and guarantees a consistent return to zero when remounted in the same position as initially zeroed. Additionally, it incorporates a safety feature to prevent accidental movement or detachment of the optic, positioning Sidelok as a leader in the future of optics mounts. The Sidelok Modular ACOG mount is characterized by a slim profile and a slightly elevated base to facilitate aiming and provide clearance for iron sights. A distinctive feature of the Modular ACOG mount is its two different mounting positions, which offer a more forgiving eye relief. In the forward mounting position, the ACOG aligns flush with the front of the mount, presenting a profile similar to, but taller than, the Trijicon TA51 mount. When mounted in the rearward position, the ACOG adopts a rearward cantilever, allowing for clearance over most folded flip-up iron sights. The Sidelok system offers genuine quick-detach (QD) functionality with a push-button design, enabling secure ACOG mounting and detachment in seconds, maintaining zero The Sidelok system secures your ACOG to the picatinny rail with exceptional stability, ensuring the optic remains fixed during intense recoil or sudden movements The Sidelok system ensures consistent zero retention, eliminating the need for re-zeroing your ACOG after detachment and reattachment, saving time and effort The Sidelok modular ACOG mount provides two mounting positions, allowing customization for different eye relief preferences and shooting styles The forward position offers a flush alignment with the mount's front, akin to the Trijicon TA51, but features a taller profile for enhanced aiming and iron sight clearance The rearward position features a cantilever design, ensuring sufficient clearance to accommodate the majority of folding flip-up iron sights The Sidelok modular ACOG mount features a streamlined design that reduces bulk and weight, improving the rifle's handling and maneuverability