The DOT Mount by Reptilia is a lightweight, slim-line mounting solution for a variety of red dot optics. Machined from billet 7075-T6 aluminum with Milspec Type III hard anodized finish, the DOT Mount attaches to any M1913 Picatinny rail, and offers lower 1/3 co-witness with standard AR15-style back-up sights. Its spring-loaded nitrided steel clamp and mounting bolt simplify the installation process, and sit flush with the body of the mount for a low-profile, anti-snag design. Features:Type III hardcoat anodized 7075 aluminumNitrided 4140 steel51 gramsCompatible with:Aimpoint - Micro R-1, H-1, H-2, T-1, T-2, CompM5Sig Sauer - ROMEO4 , ROMEO5 & ROMEO-MSRVortex Optics - Crossfire, Sparc I & IIPrimary Arms - Classic Series Gen II, SLx Advanced Rotary Knob Microdot, & SLx Compact 1A-20 Prism Scope - ACSS-CyclopsHolosun Technologies - HS403, HS503 HS504, HS515, & HS515 Series