Mounting absolute co-witness sights directly to standard height receiver rails often creates severe ergonomic constraints, forcing shooters into a collapsed neck position that hampers mobility and obscures sight pictures when wearing night vision goggles or modern protective masks.

The Unity Tactical FAST™ Absolute Riser resolves this geometric limitation by creating an established 2.26″ optical centerline when paired with absolute co-witness rail-mounted sights, such as the EOTech® XPS Series. By elevating optics to this baseline, shooters achieve a natural "heads-up" posture that speeds up reticle acquisition, maintains peripheral awareness, and facilitates unhindered passive aiming through helmet-mounted night vision optics.

Key Features

• Tailored for Absolute Co-Witness Optics: Specially dimensioned to bring absolute co-witness sights like the EOTech® XPS series up to a 2.26″ optical centerline.
• Enhanced Heads-Up Ergonomics: Elevates line of sight to reduce neck strain and simplify target acquisition while wearing comms gear, gas masks, or NVGs.
• 7075-T6 Aerospace Aluminum: CNC-machined from lightweight, heavy-duty 7075-T6 aluminum to endure extreme dynamic impacts.
• Mil-Spec Hardcoat Anodized: Features a Type III hardcoat anodized finish for maximum resistance against abrasion and corrosion.
• Modular Ecosystem Integration: Ships standard with a robust two cross-bolt rail clamp, supports the optional FAST™ QD Lever, and pairs cleanly with any FAST™ FTC magnifier mount.

Technical Highlights

• Brand: Unity Tactical
• Product: FAST™ Absolute Riser
• Available Colors: Black, FDE
• Optical Centerline Height: 2.26"
• Rail Interface: MIL-STD M1913 Picatinny
• Material: 7075-T6 Aluminum
• Coating: Type III Hardcoat Anodized
• Weight: <3.5 oz / <99.2 g
• Dimensions (W x L x H): <1.4 x 3.6 x 1.0 in / <3.6 x 9.1 x 2.5 cm
• Compatibility: Most absolute co-witness rail-mounted sights, such as the EOTech® XPS series and similar optics

Applications

Designed for law enforcement officers, military operators, and airsoft competitors who utilize absolute co-witness optics and demand a taller optical platform for night vision passive aiming and open-field situational awareness.

FAQ

• Q: What is the difference between the FAST Optic Riser and FAST Absolute Riser?
  • A: The FAST Optic Riser is intended for lower 1/3 co-witness optics (like the EOTech EXPS series), whereas the FAST Absolute Riser is designed for lower-profile absolute co-witness optics (like the EOTech XPS series). Both result in a 2.26" centerline height.
• Q: Does this mount support quick-detach capabilities?
  • A: Yes, it ships with a standard two cross-bolt rail clamp but is fully compatible with the FAST™ QD Lever.
• Q: Can I use a magnifier with this riser?
  • A: Yes, it is fully compatible with any FAST™ FTC (Flip-To-Center) magnifier mount.