ARKEN EP5-5251VPR VPR 5-25X FFP 34MM MRAD - SHIPS FROM SPORTS SOUTH
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ARKEN
ARKEN EP5-5251VPR VPR 5-25X FFP 34MM MRAD - SHIPS FROM SPORTS SOUTH
ARKEN OPTICS EP-5 5-25x56 FFP RIFLE SCOPE — VPR ILLUMINATED / MRAD TURRETS
The Arken Optics EP-5 5-25x56 FFP VPR MRAD (EP5-5251VPR) is the MRAD-turret variant of the EP-5 5-25x56 VPR illuminated scope. Optical and mechanical specifications are identical to the MOA variant (EP5-5250VPR) — Japanese ED glass, red-illuminated VPR center, AZS zero stop, 32 MIL of elevation travel, side parallax from 25 yards, CCW turret rotation, and sunshade with CR2032 battery included. The single difference is the turret click unit: MRAD rather than MOA. Because the VPR reticle uses MIL-based subtension spacing, this MRAD variant delivers a MIL-over-MIL workflow — reticle reads and turret inputs in the same unit, no conversion required.
At 5-25x, the EP-5 spans from a wide 5x minimum with 25.3 feet of field of view at 100 yards through 25x for extended-range precision. The red-illuminated center dot and 1 MIL (4 MOA) area around it enhance aiming point visibility in low-light conditions without washing out the surrounding holdover grid. 1/10 MIL tactile and audible clicks allow precise dialing from MRAD-based ballistic data at the same unit the reticle is marked in. At $399.99, the EP-5 VPR MRAD brings zero stop, FFP, red center illumination, and native MIL workflow to shooters who want to work in a unified unit system without stepping up to Gen II pricing.
The VPR reticle uses MIL subtensions. MRAD turrets click in MIL. Read a 4.5 MIL holdover from the reticle, dial 4.5 MRAD on the turret. No conversion factor, no multiplication by 3.438, no approximation under time pressure. What the reticle shows is what you dial.
Each click moves point of impact 0.1 MRAD — approximately 1 cm at 100 meters, or 0.36 inches at 100 yards. Ten clicks = 1 MIL = one increment of the VPR holdover grid. The relationship between reticle marks and turret clicks is a clean 10:1 integer ratio, making manual data building and verification straightforward.
Most modern ballistic calculators, DOPE cards, and ranging systems output elevation and windage in MRAD. The EP5-5251VPR accepts this data directly on both the reticle and the turret without requiring a separate conversion column in your data book or mental arithmetic at each position.
The VPR center dot and 1 MIL surrounding area illuminate in red for low-light and transitional shooting conditions. The holdover grid stays non-illuminated at all settings, keeping the full 12 MIL grid legible while the center provides a bright, fast aiming reference when ambient light drops.
Key Features
- MRAD (MIL) turrets — reticle and turrets both MIL; 0.1 MRAD per click; no MOA conversion required
- VPR reticle with red center illumination — center dot and 1 MIL (4 MOA) area illuminate in red; holdover grid remains non-illuminated
- First Focal Plane (FFP) — VPR subtensions accurate at all magnification settings from 5x through 25x
- AZS (Arken Zero Stop) — positive stop after multiple full turret rotations; reliable, repeatable return-to-zero
- 1/10 MIL / 1/4 MOA click resolution — tactile and audible; 10 MIL / 25 MOA per revolution
- 32 MIL / 110 MOA elevation travel — 3.2 full turret revolutions from stop to stop
- 16 MIL / 55 MOA windage travel
- Counter-clockwise (CCW) turret rotation — elevation increases with CCW rotation; verify direction at initial zeroing
- 5-25x magnification — 5x minimum gives 25.3 ft FOV at 100 yards for fast field acquisition
- 56mm objective / 34mm tube — maximum light transmission and expanded adjustment capacity
- Side parallax, 25 yd – infinity
- Japanese ED glass — Extra-Low Dispersion optics; minimized chromatic aberration
- 3.4" eye relief
- Field of view: 25.3–4.9 ft @ 100 yards
- Zero reset: Yes
- Sunshade included / CR2032 battery included
- 14" length / 39.2 oz / Matte black
MRAD vs MOA — EP-5 5-25x56 Variant Comparison
| Feature | VPR MRAD — This Scope | VPR MOA (EP5-5250VPR) |
|---|---|---|
| Turret Unit | MRAD (MIL) | MOA |
| Click Value | 0.1 MRAD (~0.344 MOA) | 0.25 MOA (~0.073 MRAD) |
| Reticle Unit | MIL (VPR) | MIL (VPR) |
| Unit Matching | MIL reticle + MIL turrets — no conversion | MIL reticle + MOA turrets — conversion required |
| Best For | MIL-based ballistic data | MOA-based ballistic data |
| All Other Specs | Identical | Identical |
| List Price | $399.99 | $399.99 |
Quick Specs
- BrandArken Optics
- MPNEP5-5251VPR
- UPC850065806105
- SeriesEP-5 (Original)
- Magnification5-25x
- Objective Lens56mm
- Tube Diameter34mm
- Focal PlaneFirst Focal Plane (FFP)
- ReticleVPR
- IlluminationRed — Center + 1 MIL Area
- BatteryCR2032 (Included)
- TurretsAZS Tactical Zero Stop
- Adjustment UnitMRAD (MIL)
- Click Value1/10 MIL / 1/4 MOA
- Per Revolution10 MIL / 25 MOA
- Turret RotationCounter-Clockwise (CCW)
- Zero ResetYes
- Elevation Range32 MIL / 110 MOA
- Windage Range16 MIL / 55 MOA
- Parallax25 yd – Infinity (side adj.)
- Eye Relief3.4"
- Field of View25.3–4.9 ft @ 100 yd
- GlassJapanese ED
- Length14.0"
- Weight39.2 oz
- FinishMatte Black
- SunshadeIncluded
- List Price$399.99
The EP-5's elevation turret increases elevation with counter-clockwise rotation — the opposite of most scopes where clockwise is up. This is a scope-level design choice and does not affect accuracy, click value, or adjustment range. MRAD turrets with CCW rotation still deliver the same 0.1 MRAD per click as any other MIL-click scope. The practical implication is that dialing up requires turning the turret counter-clockwise, and the AZS zero stop is reached by rotating clockwise back to zero. Verify rotation direction during your first zeroing session to establish correct muscle memory before field use.
The red illumination on the VPR covers only the center dot and the 1 MIL (4 MOA) zone immediately surrounding it — not the full holdover grid. At low illumination settings in low-light conditions, the center glows red while the surrounding hash marks remain black against the light-gathering 56mm objective image. This prevents the grid from blooming in low-light conditions at high illumination settings and keeps all holdover marks clearly readable. Adjust illumination brightness to the minimum level at which the center is clearly visible to your eye under the ambient conditions — this preserves the best overall image quality while providing the center reference needed for precision aiming.
Frequently Asked Questions
What is the difference between this scope and the MOA variant (EP5-5250VPR)?
The only difference is the turret click unit. This MRAD variant (EP5-5251VPR) clicks in MIL; the MOA variant (EP5-5250VPR) clicks in MOA. Every other specification — glass, magnification, reticle, illumination, zero stop, objective, tube, eye relief, field of view, parallax range, length, weight, accessories included, and price — is identical. The choice comes down entirely to which unit your ballistic data and workflow use. If you work in MIL and want reticle and turrets in the same unit with no conversion, this variant is the correct choice. If your data is in MOA or you prefer MOA clicks, the EP5-5250VPR is the right choice. Both are $399.99.
How does the 1/10 MIL click integrate with the VPR reticle markings?
The VPR reticle marks holdover positions in MIL at consistent spacing. The 1/10 MIL (0.1 MRAD) click on these turrets means each click is 1/10 of the finest MIL increment on the reticle. At 10 clicks per MIL, the relationship between what you see in the reticle and what you dial on the turret is a clean integer: 1 MIL holdover mark = 10 clicks of elevation. This makes manual DOPE card building and verification straightforward — each reticle mark corresponds to a specific click count with no fractional conversion needed. For field use, most shooters work with whole or half-MIL holds from the reticle and dial to the nearest 0.1 MRAD on the turret, which is the precision level supported by the click resolution.
How does the AZS zero stop work after multiple turret revolutions?
The Arken Zero Stop (AZS) provides a positive mechanical stop at the zeroed position regardless of how many full revolutions the elevation turret has traveled from zero. At 10 MIL per revolution and 32 MIL of total elevation, the turret has 3.2 revolutions of travel from stop to stop. After dialing 2 or 3 full revolutions up for a long-range correction, rotating the turret back down (clockwise on this CCW scope) to the zero stop confirms return-to-zero mechanically — the turret stops, you feel and hear it, and you know you are back at your zeroed position without tracking revolution count.
Is the illumination battery replaceable in the field?
Yes. The illumination system uses a CR2032 coin cell battery, which is a widely available standard battery found at pharmacies, electronics stores, and most sporting goods retailers. A CR2032 is included with the scope. Carry a spare if you plan extended field use with illumination active. Battery life depends on illumination brightness setting and total hours of use; running illumination at minimum effective brightness extends battery life. The illumination circuit is independent of the optical and mechanical systems — if the battery depletes, the scope continues to function normally as a non-illuminated FFP scope.
What mounts or rings fit this scope?
The EP5-5251VPR requires 34mm scope rings or a 34mm one-piece mount. Standard 30mm rings will not fit. At 14 inches in length and 39.2 oz, ring spacing and position should account for the parallax turret on the left side of the body and the sunshade when attached. For long-range use, a 20 MOA canted Picatinny rail can extend the effective engagement range by reserving more of the 32 MIL elevation travel for upward correction rather than using it to compensate for a below-rail zero. Mount height selection depends on your rifle's receiver height and objective bell clearance over the barrel.
About Arken Optics
Arken Optics is an American optics company focused on delivering precision rifle scopes, red dots, and accessories at competitive price points for the long-range and sporting shooting community. The EP-5 series brings first focal plane performance, zero stop turret systems, and ED glass clarity to hunters, precision rifle competitors, and field shooters at accessible price points. Available in multiple magnification ranges, reticle options, and turret unit configurations to match different shooting workflows and ballistic data preferences.