Sightron S-TAC 1-4.5X24 SR1 Service Rifle Scope
- Rifle Scope
- 24 mm
- Hunting
- Aluminum
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How it ranks among the 359 rifle scopes we track
3.5★ across 2 Amazon ratings, Bayesian-smoothed toward the category average.
2 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: limited - limited rating history.Last refreshed Jun 22, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A Sightron S-TAC 1-4.5x24 SR1 service rifle scope built for CMP and NRA High Power competition, with an ExacTrack windage and elevation system, MC-333 multi-coated lenses, and a matte black aircraft aluminum tube.
The SR1 reticle pairs an MOA circle with a center aiming dot and horizontal and lower-vertical stadia lines meant to draw the eye to center quickly, a design aimed squarely at service rifle competition use rather than general hunting. ExacTrack keeps the erector tube in constant contact for consistent adjustments, which one owner review confirms in practice, though another reports the elevation mechanism working loose after months of use.
- 1-4.5x24 SR1 competition reticle
- ExacTrack windage and elevation system
- MC-333 multi-coated lenses
- Aircraft aluminum tube with throw lever
Who it's for
CMP Service Rifle and NRA High Power competitors who want a scope built specifically for that discipline's SR1 reticle and turret style. Shooters wanting a general-purpose hunting scope with a duplex reticle should look elsewhere.
What buyers say
From Amazon customer reviews.
One reviewer called the scope excellent value for CMP Service Rifle EIC matches, with clear turret lettering, positive and easy return to zero, and a clear, uncluttered reticle. Another reviewer rated it good overall but reported the elevation adjustment worked loose after about six months, requiring repeated upward correction to point of impact until the scope was sent back to the manufacturer for repair.
Strengths and trade-offs
Drawn from this product's published specifications.
- ExacTrack system gave one reviewer reliable return to zero
- Clear, uncluttered SR1 reticle for competition
- MC-333 multi-coating for light transmission
- Repositionable throw lever for magnification changes
- One reviewer had elevation adjustment work loose after six months
- Reticle is purpose-built for service rifle competition, not general hunting
Specifications
| Brand | Sightron |
|---|---|
| Model | 26021-Sightron |
| Dimensions & fit | |
| Objective Lens Diameter | 24 mm |
| Item Weight | 2 pounds |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Matte Black |
| Compatibility & installation | |
| Mounting Type | Picatinny Mount |
| Compatible Devices | Rifle |
| Included components | |
| Included Components | Instruction Manual, Set of Lens Covers, Lens Cleaning Cloth |
| Warranty & support | |
| Warranty Description | Lifetime |
| Other details | |
| Sport Type | Hunting |
| Reticle Type | S-TAC 1-4.5X24 SR1 |
| Night vision | No |
| Field Of View | 110 Feet |
Other Sightron rifle scopes
How it compares
This product against the closest alternatives we track in rifle scopes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Sightron S-TAC 1-4.5X24 SR1 Service Rifle ScopeThis product | 3.5 / 5 | 2 | 2.7 / 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 Sightron 26021-Sightron
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What is the Sightron S-TAC SR1 scope designed for?
It is designed for CMP Service Rifle and NRA High Power competition use, with an SR1 reticle built for that discipline.
Do owners report the turret adjustments holding zero?
One reviewer reported easy, positive return to zero, while another reported the elevation adjustment worked loose after about six months and needed factory repair.
What tube material does it use?
It uses a one-piece aircraft grade aluminum tube that is waterproof, fogproof and shockproof.