Nightforce
Nightforce ATACR 4-16x42 F1
$2900
Best Rifle Scopes · head-to-head
Nightforce ATACR 4-16x42 F1 vs Arken EP5 5-25x56
A sourced, side-by-side comparison. Arken EP5 5-25x56 is cheaper at $499.98. Every spec and price links to its source.
Arken
Arken EP5 5-25x56
$499.98Cheaper
Which is better: the Nightforce ATACR 4-16x42 F1 or Arken EP5 5-25x56?
The Nightforce ATACR 4-16x42 F1 wins 1 of the 1 specs we compare head to head; the other wins 0. The Arken EP5 5-25x56 is the cheaper at $499.98. Get the Nightforce ATACR 4-16x42 F1 for the stronger spec sheet, the Arken EP5 5-25x56 to spend less.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Nightforce ATACR 4-16x42 F1 | Arken EP5 5-25x56 |
|---|---|---|
| US price | $2900 | $499.98 |
| Brand | Nightforce | Arken |
| Released | — | — |
| Magnification range | 4-16x | 5-25x |
| Objective diameter (mm) | 42 | 56 |
| Tube diameter (mm) | 34 | 34 |
| Focal plane | FFP | FFP |
| Reticle illuminated | Yes | Yes |
| Elevation travel mil | 26 | 32 |
| Click value | .1 MRAD | 0.1 MRAD |
| Field of view (ft) | 26.9 | 25.3 |
| Eye relief (in) | 3.5 | 3.4 |
| Parallax type | side-focus | side-focus |
| Length (in) | 12.6 | 14 |
| Weight (oz) | 30 | 39.2 |
Sources — Nightforce ATACR 4-16x42 F1: nightforceoptics.com (verified 2026-07-11). Arken EP5 5-25x56: arkenopticsusa.com (verified 2026-07-11).
What's the difference between the Nightforce ATACR 4-16x42 F1 and Arken EP5 5-25x56?
Where the two actually differ on the specs we track (8 of 12). Matching specs are omitted.
- Magnification range: Nightforce ATACR 4-16x42 F1 4-16x vs Arken EP5 5-25x56 5-25x
- Objective diameter (mm): Nightforce ATACR 4-16x42 F1 42 vs Arken EP5 5-25x56 56
- Elevation travel mil: Nightforce ATACR 4-16x42 F1 26 vs Arken EP5 5-25x56 32
- Click value: Nightforce ATACR 4-16x42 F1 .1 MRAD vs Arken EP5 5-25x56 0.1 MRAD
- Field of view (ft): Nightforce ATACR 4-16x42 F1 26.9 vs Arken EP5 5-25x56 25.3
- Eye relief (in): Nightforce ATACR 4-16x42 F1 3.5 vs Arken EP5 5-25x56 3.4
- Length (in): Nightforce ATACR 4-16x42 F1 12.6 vs Arken EP5 5-25x56 14
- Weight (oz): Nightforce ATACR 4-16x42 F1 30 vs Arken EP5 5-25x56 39.2