Unity Style FAST Optic Riser Mount: full guide and review

At a glance

• Product: Unity Style FAST Optic Riser Mount
• Link: Unity Style FAST Optic Riser Mount
• Price: £20.00
• Material: CNC aluminium, anodised
• Colours: Black, FDE
• Rail standard: M1913 Picatinny
• Mount type: Rail‑grabber clamp
• Top interface: Elevated M1913 Picatinny platform
• Compatibility: EXPS, UH‑1, and other lower 1/3 co‑witness optics; “Perfect for HWO S1 EXPS3”
• In the box: 1x riser mount, 1x mounting tool
• Dispatch: UK Next Day Dispatch

What this riser is and who it’s for

This is a Picatinny riser that lifts your optic to a higher line of sight. It is aimed at players running EXPS‑style and UH‑1‑style holographic sights. It targets lower 1/3 co‑witness heights, which many find comfortable with face protection. It suits rifles with a flat Picatinny receiver and optics that bolt directly to a rail. If you wear a mesh mask or prefer a head‑up posture, this style helps.

Co‑witness and height explained

• Simple: Lower 1/3 co‑witness places the optic window a bit higher than iron sights. You see sights in the lower part of the window, not blocking the centre.
• Detailed: The riser elevates the optic so the sightline clears bulkier eye pro and chest rigs. The page states support for EXPS, UH‑1, and “other lower 1/3 co‑witness optics,” signalling the riser targets that common height class without listing a number.

Key features that matter

• Elevated M1913 top platform for direct optic mounting.
• Rail‑grabber clamp for a secure Picatinny attachment.
• CNC aluminium with anodised finish for corrosion resistance.
• Two colour choices: Black and FDE to match most builds.
• Perfect for the HWO S1 EXPS3.
• Evolve offers UK Next Day Dispatch and a clear restock date.

Why it’s well suited to airsoft

• Head‑up shooting posture reduces neck strain on long days.
• Better clearance over mesh masks and bulky goggles.
• Cleaner line of sight over PEQ boxes and cable runs.
• Fast target index for CQB and busy sight pictures.
• Budget friendly upgrade that refreshes ergonomics without a full rebuild.

Compatibility and setup

• Works on any receiver with an M1913 Picatinny rail.
• Designed for EXPS‑type and UH‑1‑type optics that mount straight to Picatinny.
• Lower 1/3 co‑witness users will feel at home with the stated target use.
• If you run a magnifier, check your magnifier mount height matches.

Mounting steps 1) Place the riser on your receiver rail and set the eye relief area you prefer. 2) Align the clamp and snug the clamp fastener evenly. 3) Mount your optic onto the riser’s top Picatinny. 4) Confirm screws are tight and recheck after the first skirmish. 5) Re‑zero at your typical engagement distance.

On‑field benefits

• Faster sight picture with a natural, upright head position.
• Clears face pro for cleaner cheek welds on helmets and masks.
• Helps maintain awareness in CQB where targets move fast.
• Keeps your optic above cables, pressure pads, and lasers.

Practical buying advice

• Choose it if you run an EXPS‑style or UH‑1‑style optic and want lower 1/3 height.
• Choose it if a mask or helmet makes your current optic sit too low.
• Choose Black or FDE to blend with your rifle and kit.
• If you run a magnifier, confirm height alignment before purchase.

Common questions

• Will it fit an EXPS3 clone? Yes.
• Will it fit a UH‑1 style? Yes, UH‑1 is listed.
• What rail do I need? An M1913 Picatinny receiver rail.
• Does it include tools? Yes, a mounting tool is included.
• How fast is shipping? UK Next Day Dispatch is available with Evolve.

Use this with

• EXPS‑style holographic sights, including the HWO S1 EXPS3
• Any other lower 1/3 co‑witness optic that mounts to Picatinny.

Key takeaways

• Affordable CNC aluminium riser with Black and FDE options.
• Built for EXPS/UH‑1 type optics and lower 1/3 co‑witness.
• Simple rail‑grabber clamp, tool included, fast dispatch in the UK.