Reptilia 100037: The 1.93 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 1.93 Dot Mount attaches to any M1913 Picatinny rail to place the optical axis at 1.93\" above the rail. 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. Compatible with- Aimpoint Micro R-1, H-1, H-2, T-1, T-2, CompM5; Sig ROMEO4 & ROMEO5; Vortex Optics Crossfire, Sparc I & II; Primary Arms Micro Dot & Advanced Micro Dot; Holosun Technologies HS403 & HS503 Series. Made in the USA.