Monstrum S330P 3X Prism Scope
- Rifle Scope
- 30 mm
- 3x
- 3x
- More reviewed than 97%
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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How it ranks among the 359 rifle scopes we track
4.4★ across 1,300 Amazon ratings, Bayesian-smoothed toward the category average.
1,300 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 359 rifle scopes we track - how the scorecard works · full rifle scopes data report. Confidence: medium - useful but incomplete evidence.Last refreshed Jun 22, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
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
Suits shooters wanting a bright, short-range prism optic under about $100, including those with astigmatism who find etched reticles easier to focus on than projected red-dot lasers. Less suited to rifles with limited rail space where mounting the scope far enough back is difficult.
What buyers say
From Amazon customer reviews.
Buyers repeatedly describe the glass as bright and clear for roughly a $100 optic, and several call it a strong value against pricier prism scopes. The main complaint is short eye relief causing fitment problems on certain rifle platforms, with one reviewer returning it over rail placement.
Strengths and trade-offs
Drawn from this product's published specifications.
- 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 | 8595690470 |
| Dimensions & fit | |
| Objective Lens Diameter | 30 mm |
| Item Weight | 15 ounces |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Black |
| Compatibility & installation | |
| Mounting Type | Weaver Mount |
| Compatible Devices | Rifle |
| Included components | |
| Unit Count | 1 |
| Included Components | 3x30 Prism Scope, 1x CR2032 Battery, Lens Cleaning Cloth, Manual |
| Other details | |
| Magnification Minimum | 3x |
| Magnification Maximum | 3x |
| Sport Type | Hunting |
| Reticle Type | Circle Dot |
| Thread Type | 1/4"-20 |
| Night vision | No |
| Product Style | Circle Dot Reticle |
Other Monstrum rifle scopes
How it compares
This product against the closest alternatives we track in rifle scopes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Monstrum S330P 3X Prism ScopeThis product | 4.4 / 5 | 1,300 | 4.1 / 5 |
| UTG 3-12X44 30mm Compact ScopeUTG | 4.5 / 5 | 3,000 | 4.4 / 5 |
| Vortex Optics Diamondback Second Focal PlaneBrand | 4.7 / 5 | 1,500 | 4.3 / 5 |
| PINTY Tactical Rifle Scope Combo: Illuminated OpticsPinty | 4.4 / 5 | 1,100 | 4.3 / 5 |
| Firefield RapidStrike 1-6x24 SFP Riflescope KitFirefield | 4.5 / 5 | 900 | 4.3 / 5 |
Similar rifle scopes from other brands
Questions about the Monstrum 8595690470
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Monstrum S330P help with astigmatism?
Reviewers say the etched glass reticle is easier to focus on than a projected red-dot laser, which several found helped with astigmatism.
What is the eye relief like?
Multiple reviewers report short eye relief; one had to lean forward on an AR with a long length of pull, and another returned the scope over rail placement.
How does Shake Awake work?
Illumination shuts off after about ten minutes without movement and comes back on as soon as the rifle moves.