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Swiss Schmidt-Rubin Straight-Pull Rifle Database

The Holosun ARO-EVO-RD-SPR is a premium red dot sight from the ARO EVO (Advanced Rifle Optic — Evolution) line, Holosun's high-end platform for modern rifles. It stands out with a red SPR (Special Purpose Reticle) BDC calibrated for M193 5.56 NATO at 3050 FPS — an integrated bullet drop compensation system that transforms this optic into a precision tool for medium to long-range shooting without a magnifier.

The SPR reticle combines a 1.5 MOA center dot for precision, 1 MOA holdovers for shots at 200, 300, 400 m and beyond, a 65 MOA circle for fast CQB acquisition, and ranging references to estimate shooting distances dynamically. A system factory-calibrated for M193 5.56  3050 FPS — the standard caliber and velocity for AR-15 rifles with 14.5"–20" barrels firing 55 gr FMJ.

The enlarged 26 mm window, integrated solar panel (Solar Failsafe), Adaptive Brightness ambient light sensor, Lockout Mode anti-tamper, side-loading CR2032 battery with 50,000-hour life, and 6061 hard-anodized aluminum housing with IPX8 submersion make the ARO-EVO-RD-SPR an optic built for demanding, prolonged use.

Delivered with TWO Picatinny mounts — the 1.63" central mount for lower 1/3 co-witness with AR-15 iron sights, and the 1.05" low mount for low-mount configurations.

• SPR BDC Reticle calibrated for M193 5.56 3050 FPS: 1.5 MOA center dot + 1 MOA holdovers + 65 MOA circle + ranging references — a red dot with integrated bullet drop compensation.
• Optimized for AR-15 in 5.56 NATO / .223 Rem firing 55 gr FMJ — the global standard for sport rifle shooting.
• 26 mm window: one of the largest windows in the compact red dot market — panoramic field of view.
• Solar Failsafe: integrated solar panel powers the optic without battery when light is sufficient.
• Adaptive Brightness (auto): ambient light sensor automatically adjusts reticle intensity.
• Lockout Mode: button lock prevents accidental adjustments during competition or service.
• Shake Awake: motion-activated on, auto-off — battery saving.
• 50,000-hour battery life on CR2032 (setting 6).
• Side-loading battery: replacement without removing the optic — no zero loss.
• 8 daylight + 4 night vision brightness settings.
• Selectable reticle: switch between full SPR and 1.5 MOA dot only.
• Two mounts included: 1/3 co-witness (1.63") + low mount (1.05").
• 6061 aluminum hard-anodized construction, IPX8 submersion waterproof, 1000G shock resistance.
• 1x magnification + unlimited eye relief.

• Light source: LED (650 nm — Red)
• Reticle: SPR — 1.5 MOA Dot + 1 MOA Holdovers + 65 MOA Circle + Ranging Reticle
• BDC calibration: M193 5.56 NATO at 3050 FPS
• Magnification: 1x
• Eye relief: unlimited
• Multi-coatings: yes
• Selectable reticle: yes (full SPR or 1.5 MOA dot only)

• Solar Power (Failsafe): yes
• Shake Awake: yes
• Auto Off: yes
• Memory: yes
• Manual brightness: 8 daylight + 4 night vision
• Adaptive brightness: yes
• Lockout Mode: yes

• Battery type: CR2032 (⚠️ not included in the box)
• Battery life: 50,000 hours
• Removable battery: yes
• Battery location: side tray
• Solar backup: integrated panel (Solar Failsafe)

• Housing: 6061 aluminum
• Surface finish: hard-anodized
• Color: black
• Adjustment per click: 0.5 MOA
• W&E travel range: ±50 MOA
• Storage temperature: -40°C to +70°C
• Working temperature: -30°C to +60°C
• Waterproofing: IPX8 (submersion)
• Vibration resistance: 1000G

• Window diameter: 26 mm (1.02")
• Body dimensions: 73 × 43 × 69 mm (2.87" × 1.68" × 2.7")
• Optic weight: 122 g (4.3 oz)
• Central mount height: 1.63"
• Low mount height: 1.05"
• Mount weight: 48 g (1.7 oz)

• Direct mount: Picatinny (MIL-STD-1913)
• Two mounts included: 1.63" lower 1/3 co-witness + 1.05" low mount

The SPR (Special Purpose Reticle) is Holosun's signature reticle for rifle optics. It combines acquisition speed (65 MOA circle + center dot) and distance precision (BDC holdovers) — a compromise long reserved for LPVOs and prismatic sights.

• 1.5 MOA center dot: precise enough for 100 m shots, visible enough for fast acquisition.
• 1 MOA holdovers: bullet drop compensation points for 200, 300, 400 m and beyond — no more turret calculations.
• 65 MOA circle: fast engagement zone for CQB / dynamic shooting.
• Ranging references: marks to estimate distance of a known-size target.

Factory calibrated for M193 5.56  3050 FPS = the standard for AR-15 rifles with 14.5"–20" barrels firing 55 gr FMJ. SPR will be accurate out of the box with the most common M193 ammunition — for other calibers/loads (M855, 77 gr TMK, etc.), holdovers remain usable as approximate references or can be re-calibrated at range.

The integrated solar panel on top of the optic powers the reticle in sufficient light — even without a battery installed. The CR2032 battery takes over in dark environments or NVD use. Result: an optic virtually impossible to disable in intensive use, including forgotten battery replacements.

• Long-range sport rifle shooting: the SPR BDC reticle enables precise engagement to 200-400 m without magnifier — perfect for Field Target, precision sport shooting, variable-distance steel plates.
• Dynamic sport shooting: IPSC Rifle, 3-Gun, Multi-Gun — precise center dot + 65 MOA circle for fast transitions + holdovers for distant targets.
• AR-15 platform in 5.56 NATO / .223 Rem: native BDC calibration — no ballistic calculation needed, holdovers directly usable.
• Other semi-automatic platforms: PCC (9x19), .308 Win rifles — SPR remains usable as ranging reference, holdovers adjustable at range.
• Medium-range hunting: BDC holdovers ease compensation shots in variable terrain. Compatible with big-game hunting using appropriate caliber.
• Service and patrol use: Solar Failsafe + Lockout Mode + IPX8 = maximum reliability in constrained environments.
• Credible alternative to fixed 1x prism: same BDC capabilities as an ACOG 1.5x or SLx prism, with unlimited eye relief and reduced weight.

• Holosun HM3X — 3x flip-to-side magnifier for range extension to ~300-400 m with enhanced shooting comfort on the SPR.
• Holosun HM5X — 5x flip-to-side magnifier for range extension to ~500 m and beyond.

The ARO-EVO-RD-SPR + HM3X pack is offered by Holosun as the reference configuration for long-range sport rifle shooting.

• 1 Holosun ARO-EVO-RD-SPR optic
• 1 Picatinny central mount 1.63" (1/3 lower co-witness)
• 1 Picatinny low mount 1.05"
• 1 microfiber lens cloth
• 1 Holosun multi-tool
• 1 user manual
• 1 warranty card

⚠️ CR2032 battery not included — to be ordered separately.