Monstrum S330P 3X Prism Scope
- Magnification Minimum: 3x
- Magnification Maximum: 3x
- Objective Lens Diameter: 30 mm
- Mounting Type: Weaver Mount
Last refreshed Jun 22, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
Clear glass and a bright etched reticle at a low price, but confirm eye relief fits your rifle's rail position before buying.
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ASIN: B00QSLYMIQModel: S330PCategory: Rifle Scopes
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Overview
The Monstrum S330P is a 3x fixed-magnification prism rifle scope with a red or green etched glass reticle and Shake Awake motion-sensing illumination that idles after inactivity and turns back on when the rifle moves.
More than one reviewer flagged short eye relief as a real fitment issue, with one leaning forward on an AR platform with a long length of pull, and another returning the scope entirely because a rifle's non-standard rail placement wouldn't allow a full field of view. Worth confirming eye relief against your specific setup before buying.
- 3x fixed magnification prism optic
- Red or green illuminated etched reticle
- Shake Awake auto on and off
- Lifetime warranty included
Who it's for
Less suited to rifles with limited rail space where mounting the scope far enough back is difficult.
Pros and cons
- Bright, clear glass for the price point
- Etched reticle reported easier to focus on with astigmatism
- Shake Awake illumination saves battery automatically
- Eye relief is short and can require leaning in on some rifles
- Turrets can't be capped like other Monstrum models
- Included lens covers are basic
Specifications
| Brand | Monstrum |
|---|---|
| Model | S330P |
| Dimensions & fit | |
| Objective Lens Diameter | 30 mmlower than 75% of 309 rifle scopes |
| Item Weight | 0.94 poundslower than 81% of 238 rifle scopes |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Black |
| Compatibility & installation | |
| Mounting Type | Weaver Mount |
| Compatible Devices | Rifle |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Magnification Minimum | 3x |
| Magnification Maximum | 3x |
| Night vision | No |
| Thread Type | 1/4"-20 |
| Sport Type | Hunting |
| Reticle Type | Circle Dot |
Closest rivals on specs
Frequently asked questions
How does Shake Awake work?
Illumination shuts off after about ten minutes without movement and comes back on as soon as the rifle moves.