The Unity Tactical MRDS Ring for FAST KICKR functions as a specialized, ultra-stable 12 o'clock secondary mounting base. Because the host FAST KICKR Scope Mount is designed at a military-requested 1.54-inch optical centerline rather than Unity's traditional 2.26-inch height, it matches standard factory inline spacing flawlessly. The ring features a custom 32mm internal inner diameter tailored strictly to the unique body shape of EOTech's 3-9x32 SFP variable optic. By swapping out the mount's original top cap with this non-powered, self-indexing aluminum ring, shooters can seamlessly add modular adapter plates. This creates a completely centered, zero-holding backup sight plane right above the primary turrets for instantaneous transitions between high-magnification targets and unexpected close-range threats.