Vortex Optics Viper PST Gen I PST-624S1 SFP Riflescope
- Magnification Minimum: 6x
- Magnification Maximum: 24x
- Objective Lens Diameter: 30 mm
- Mounting Type: Cantilever Mount
Last refreshed Jun 22, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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ASIN: B003AQKQAACategory: Rifle Scopes
Overview
The Viper PST Gen I is Vortex's 6-24x50 second focal plane riflescope built around a one piece 30mm tube machined from aircraft grade aluminum. It pairs an MOA based EBR-1 reticle with matching turrets for hunters and target shooters who want to dial corrections rather than hold over.
Note this is the second focal plane version of the PST line; Vortex also sells a first focal plane PST, and at least one reviewer who owns both found the FFP version sharper at the top of its zoom range for target work.
- 6-24x50 second focal plane
- One piece 30mm aircraft grade aluminum tube
- MOA based EBR-1 reticle matched to turrets
- Argon purged, O-ring sealed for water and shock resistance
Who it's for
Fits hunters and casual long range shooters mounting on rifles like a Savage 10 or DPMS LR-308 who want repeatable 1/4 MOA turret clicks and an illuminated reticle for low light. Dedicated precision target shooters chasing the tightest groups at full magnification may prefer the first focal plane PST instead.
Pros and cons
- Illuminated reticle helps at dawn and dusk hunting light
- Image reportedly gets fuzzy at full power compared to the first focal plane PST
- Illumination lit unevenly on at least one unit before replacement
Specifications
| Brand | Vortex |
|---|---|
| Dimensions & fit | |
| Objective Lens Diameter | 30 mmlower than 75% of 309 rifle scopes |
| Item Weight | 1.46 poundshigher than 57% of 238 rifle scopes |
| Construction & materials | |
| Material Type | Aluminum,Glass |
| Color | Black Matte |
| Compatibility & installation | |
| Mounting Type | Cantilever Mount |
| Compatible Devices | Rifle |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Magnification Minimum | 6x |
| Magnification Maximum | 24x |
| Night vision | No |
| Thread Type | 30mm |
| Sport Type | Hunting |
Closest rivals on specs
UTG OP3 4-16x44 Compact Scope- Item Weight 1.46 vs 1.3 pounds (+12%)
Frequently asked questions
Is the Viper PST Gen I 6-24x50 first or second focal plane?
Second focal plane (SFP). Vortex also makes a first focal plane PST, which one reviewer found sharper for target shooting at maximum zoom.
What reticle does this scope use?
The EBR-1, an MOA based hashmarked reticle for holdover and windage that matches the turret's MOA adjustments.
What tube diameter does the Viper PST 6-24x50 use?
A 30mm one piece tube machined from a single block of aircraft grade aluminum.