BSA 3-9X40 Sweet 22 Rifle Scope with Side Parallax Adjustment and Multi-Grain Turret
- Rifle Scope
- 40 mm
- Hunting
- Aluminum
- More reviewed than 57%
A well-regarded budget scope purpose-built for .22LR, worth buying if your rifle stays in that caliber and you don't need a fine crosshair for long-range precision.
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How it ranks among the 359 rifle scopes we track
4.5★ across 110 Amazon ratings, Bayesian-smoothed toward the category average.
110 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
A 3-9x40 rifle scope calibrated specifically for .22LR ammunition, with side parallax adjustment, 1/4 MOA clicks and a multi-grain turret that zero-resets for 36, 38 and 40 grain loads.
BSA built the turret math around three common .22LR bullet weights instead of a generic reticle, which is the reason to pick this over a standard scope. Reviewers running it on Ruger 10/22s, Savage rimfires and older Marlin Model 60s report it tracking true to a laser bore sighter right out of the box. One reviewer flagged the crosshair as thick enough to obscure a couple inches of target past 100 yards, worth knowing before shooting small groups at distance.
- Multi-grain turret with zero reset for 36/38/40gr loads
- Side parallax from 10 yards to infinity
- 1/4 MOA click adjustment
- Waterproof, fogproof and shockproof 1 inch tube
Who it's for
Rimfire shooters mounting a scope on a .22LR plinker or small-game rifle who want turret markings matched to actual bullet weight. Not the pick for anyone stepping up to .22 Magnum or centerfire, where one reviewer was already unsure of its capability.
What buyers say
From Amazon customer reviews.
Reviewers consistently praised how closely the turret tracked to actual point of impact and how clear the glass looked for the price, with several noting it held zero across extended use on rimfire rifles. The main complaint was reticle thickness, which one reviewer said could cover a couple inches of a target past 100 yards, making fine aiming harder at distance.
Strengths and trade-offs
Drawn from this product's published specifications.
- Turret calibrated to actual .22LR bullet weights, not a generic scale
- Held zero across multiple reviewers' rifles
- Clear glass in daylight for the price point
- Includes sunshade and screw-in scope covers
- Reticle crosshair is thick enough to cover part of the target past 100 yards
- One reviewer wasn't confident in it above .22 Magnum
- Glass isn't on par with scopes several times the price
Specifications
| Brand | BSA |
|---|---|
| Model | S22-39X40SP |
| Dimensions & fit | |
| Objective Lens Diameter | 40 mm |
| Item Weight | 1 pound |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Black Matte |
| Compatibility & installation | |
| Mounting Type | Cantilever Mount |
| Compatible Devices | Rifle |
| Included components | |
| Unit Count | 1 |
| Included Components | Scope |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Sport Type | Hunting |
| Reticle Type | 30/30 reticle |
| Thread Type | UNC |
| Night vision | No |
| Product Style | Tactical |
| Field Of View | 42 Feet |
| Item Type Name | Scopes |
Other BSA rifle scopes
How it compares
This product against the closest alternatives we track in rifle scopes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| BSA 3-9X40 Sweet 22 Rifle Scope with Side Parallax Adjustment and Multi-Grain TurretThis product | 4.5 / 5 | 110 | 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 |
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Questions about the BSA S22-39X40SP
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Is this scope calibrated for a specific caliber?
Yes, the turrets are calibrated for .22LR at 36, 38 and 40 grain bullet weights, not a general-purpose MOA scale.
Will it work on a rifle chambered in .22 WMR?
One reviewer mounted it on a .22 WMR rifle and it fit and sighted in fine, though the turret markings are printed for .22LR.
Does it hold zero?
Multiple reviewers report it held zero through extended use once properly sighted in.