# Vortex Razor HD Gen III 6-36x56 vs Primary Arms GLx 4-16x50 FFP: specs and price compared

A sourced, side-by-side comparison of the Vortex Razor HD Gen III 6-36x56 (Vortex) and Primary Arms GLx 4-16x50 FFP (Primary Arms) among rifle scopes. Primary Arms GLx 4-16x50 FFP is the cheaper of the two at $699.99.

## Side by side

| Spec | Vortex Razor HD Gen III 6-36x56 | Primary Arms GLx 4-16x50 FFP |
| --- | --- | --- |
| US price | $4799.99 | $699.99 |
| Brand | Vortex | Primary Arms |
| Magnification range | 6-36x | 4-16x |
| Objective diameter (mm) | 56 | 50 |
| Tube diameter (mm) | 34 | 30 |
| Focal plane | FFP | FFP |
| Reticle illuminated | Yes | Yes |
| Elevation travel mil | 36.1 | — |
| Click value | 0.1 MRAD | 0.1 MIL |
| Field of view (ft) | 21.3 | — |
| Eye relief (in) | 3.5 | 3.5 |
| Parallax type | side-focus | side-focus |
| Length (in) | 15.3 | 13.8 |
| Weight (oz) | 45.1 | 23.5 |

## Key differences

- Magnification range: Vortex Razor HD Gen III 6-36x56 6-36x vs Primary Arms GLx 4-16x50 FFP 4-16x
- Objective diameter (mm): Vortex Razor HD Gen III 6-36x56 56 vs Primary Arms GLx 4-16x50 FFP 50
- Tube diameter (mm): Vortex Razor HD Gen III 6-36x56 34 vs Primary Arms GLx 4-16x50 FFP 30
- Click value: Vortex Razor HD Gen III 6-36x56 0.1 MRAD vs Primary Arms GLx 4-16x50 FFP 0.1 MIL
- Length (in): Vortex Razor HD Gen III 6-36x56 15.3 vs Primary Arms GLx 4-16x50 FFP 13.8
- Weight (oz): Vortex Razor HD Gen III 6-36x56 45.1 vs Primary Arms GLx 4-16x50 FFP 23.5

## Sources

- Vortex Razor HD Gen III 6-36x56: https://vortexoptics.com/razor-hd-gen-iii-6-36x56.html (vortexoptics.com, verified 2026-07-11)
- Primary Arms GLx 4-16x50 FFP: https://primaryarmsoptics.com/optics/rifle-scopes/medium-range-scopes/primary-arms-glx-4-16x50-ffp-rifle-scope/ (primaryarmsoptics.com, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/rifle-scopes/vortex-razor-hd-gen-iii-6-36x56-vs-primary-arms-glx-4-16x50-ffp/
Cite: Per The Front Desk Review, Vortex Razor HD Gen III 6-36x56 ($4799.99) vs Primary Arms GLx 4-16x50 FFP ($699.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/rifle-scopes/vortex-razor-hd-gen-iii-6-36x56-vs-primary-arms-glx-4-16x50-ffp/
License: CC BY 4.0.