Nightforce
Nightforce ATACR 4-16x42 F1
$2900
Best Rifle Scopes · head-to-head
Nightforce ATACR 4-16x42 F1 vs Primary Arms GLx 4-16x50 FFP
A sourced, side-by-side comparison. Primary Arms GLx 4-16x50 FFP is cheaper at $749.99. Every spec and price links to its source.
Primary Arms
Primary Arms GLx 4-16x50 FFP
$749.99Cheaper
Which is better: the Nightforce ATACR 4-16x42 F1 or Primary Arms GLx 4-16x50 FFP?
The Primary Arms GLx 4-16x50 FFP wins 1 of the 1 specs we compare head to head; the other wins 0. The Primary Arms GLx 4-16x50 FFP is the cheaper at $749.99. The Primary Arms GLx 4-16x50 FFP both leads on specs and costs less — the straightforward pick.
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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 |  Primary Arms GLx 4-16x50 FFP |
|---|---|---|
| US price | $2900 | $749.99 |
| Brand | Nightforce | Primary Arms |
| Released | — | — |
| Magnification range | 4-16x | 4-16x |
| Objective diameter (mm) | 42 | 50 |
| Tube diameter (mm) | 34 | 30 |
| Focal plane | FFP | FFP |
| Reticle illuminated | Yes | Yes |
| Elevation travel mil | 26 | — |
| Click value | .1 MRAD | 0.1 MIL |
| Field of view (ft) | 26.9 | — |
| Eye relief (in) | 3.5 | 3.5 |
| Parallax type | side-focus | side-focus |
| Length (in) | 12.6 | 13.8 |
| Weight (oz) | 30 | 23.5 |
Sources — Nightforce ATACR 4-16x42 F1: nightforceoptics.com (verified 2026-07-11). Primary Arms GLx 4-16x50 FFP: primaryarmsoptics.com (verified 2026-07-11).
What's the difference between the Nightforce ATACR 4-16x42 F1 and Primary Arms GLx 4-16x50 FFP?
Where the two actually differ on the specs we track (5 of 12). Matching specs are omitted.
- Objective diameter (mm): Nightforce ATACR 4-16x42 F1 42 vs Primary Arms GLx 4-16x50 FFP 50
- Tube diameter (mm): Nightforce ATACR 4-16x42 F1 34 vs Primary Arms GLx 4-16x50 FFP 30
- Click value: Nightforce ATACR 4-16x42 F1 .1 MRAD vs Primary Arms GLx 4-16x50 FFP 0.1 MIL
- Length (in): Nightforce ATACR 4-16x42 F1 12.6 vs Primary Arms GLx 4-16x50 FFP 13.8
- Weight (oz): Nightforce ATACR 4-16x42 F1 30 vs Primary Arms GLx 4-16x50 FFP 23.5