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Vortex Optics
Overview
The Vortex Viper PST Gen II 3-15x44 FFP Rifle Scope is designed for versatility in mid-range shooting, featuring a first focal plane reticle that maintains accuracy across all magnifications from 3X to 15X. With a 44mm objective diameter, it offers a bright and clear sight picture, while the 30mm tube diameter enhances durability and light transmission. This scope is commonly found on builds with a mid-length gas system and chambered in 5.56 NATO, making it an ideal choice for precision shooting at varied distances.
Vortex Viper PST Gen II 3-15x44 FFP Rifle Scope - PST-3156 ranked #16 of the 105 rifle scopes builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since January 2026. All time, it is the tenth most added rifle scope on the site. Builds with this rifle scope are split between 5.56 NATO (55%) and .308 Win (14%), split between mid-length (43%) and carbine-length (29%) gas systems, and mostly AR-15 (64%, then AR-10 36%).
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, but today 4 of the 9 retailers we track have it in stock. Prices barely moved in August 2026, holding around $899.99, so there haven't been real sales lately. Buying today, the lowest price is $899 at Optics Planet, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every rifle scope by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Rifle Scope Guide →The part most often added in each category by the 65 builds that include this one
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Vortex Viper PST Gen II 3-15x44 FFP Rifle Scope - PST-3156
| Build | Parts | Total |
|---|---|---|
 | 10 | $2595.77 |
 | 26 | $3373.07 |
 | 21 | $3128.16 |
 | 18 | $4732.65 |
 | 19 | $2684.71 |
 | 17 | $4407.97 |
1 global rating
Top reviews
Vortex Viper PST Gen II 3-15x44 FFP is a solid optic with clear glass and tactile turrets. The battery cap threads cross thread if youre not careful putting it back on. Worth being patient on that step.
