NcSTAR Mark III Tactical 3-9x42 Scope
- Magnification Minimum: 3x
- Objective Lens Diameter: 42 mm
- Mounting Type: Picatinny Mount
- Night vision: No
Last refreshed Jun 22, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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ASIN: B00MLXTXH0Category: Rifle Scopes
Overview
Built around a quick detach Picatinny mount, the Ncstar 3-9x42 Mark III is a variable power rifle scope with an illuminated, range estimating Mil Dot reticle. It is aimed at AR platform shooters wanting an affordable scope that swaps between rifles without re-zeroing every time.
- 3 to 9x variable magnification, 42mm objective
- Dual illuminated Mil Dot reticle, blue and green
- Quick detach lever mount for Picatinny rails
- Includes lens covers and spare battery
Who it's for
Fits shooters wanting an inexpensive optic for a range gun or a rifle used mainly for casual shooting rather than hard field use. Less suited to anyone needing a scope to survive rough handling or repeated impacts without losing zero.
Pros and cons
- Quick detach lever mount for swapping between rifles without tools
- Dual illuminated reticle with multiple brightness settings in blue and green
- Includes lens covers and extra battery
Specifications
| Brand | NcSTAR |
|---|---|
| Dimensions & fit | |
| Objective Lens Diameter | 42 mmhigher than 58% of 309 rifle scopes |
| Item Weight | 1.52 poundshigher than 63% of 238 rifle scopes |
| Construction & materials | |
| Material Type | Aluminum |
| Compatibility & installation | |
| Mounting Type | Picatinny Mount |
| Compatible Devices | Handgun |
| Other details | |
| Magnification Minimum | 3x |
| Night vision | No |
| Product Style | Tactical |
| Sport Type | Hunting |
| Reticle Type | Mil Dot |
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Frequently asked questions
Does the Ncstar 3-9x42 scope hold zero reliably?
Some owners report years of reliable use, while others report the scope drifting off zero within days and not readjusting properly.
What does the illuminated reticle offer on this scope?
It has blue and green illumination with multiple brightness settings each, though one reviewer called it more of an extra feature than something essential for aiming.