Nightforce NX6 3-18x50mm F1 Riflescope
- Rifle Scope
- 50 mm
- 3x
- 18x
A mid to long range first focal plane scope balancing magnification reach with a lighter 30mm tube.
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How it ranks among the 359 rifle scopes we track
0 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
The Nightforce NX6 3-18x50mm F1 is a first focal plane riflescope with a 50mm objective and exposed FieldSet turrets, positioned for mid to long range hunting, tactical and precision shooting.
This model sits between the wider 1-6x and 6-36x NX6 scopes in the lineup, aiming at shooters who want more reach than a close-range scope but do not need the extreme zoom ratio of a dedicated long range setup. The 30mm tube is lighter than the 34mm tube on the higher-magnification NX6, which fits its middle-distance positioning.
- 3-18x first focal plane magnification
- 50mm objective lens
- 30mm main tube
- DigIllum illumination with 5 brightness levels and memory recall
Who it's for
Hunters and shooters who need reliable mid to long range performance without the size of a dedicated long range scope. Shooters who need extreme magnification for very long distances should look at the higher-power NX6 F1 model with the 34mm tube instead.
Strengths and trade-offs
Drawn from this product's published specifications.
- 3-18x first focal plane range for mid to long distance
- 50mm objective for a brighter low-light image
- Exposed FieldSet turrets for repeatable tracking
- Lighter 30mm tube than the higher-power NX6
- No published rating or review data available
- Exposed turrets can be bumped out of position if not guarded during transport
Performance notes
The .250 MOA click value on the MOA-C reticle pairs a floating center dot with thick outer bars for quick target pickup, while first focal plane scaling keeps holds accurate at any power in the 3-18x range. DigIllum illumination offers red or green lighting with five brightness levels and memory recall of the last setting.
Specifications
| Brand | Nightforce |
|---|---|
| Model | C733 |
| Dimensions & fit | |
| Objective Lens Diameter | 50 mm |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Compatible Devices | Rifle |
| Included components | |
| Unit Count | 1 |
| Included Components | NightForce NX6 3-18x50mm F1 30mm Tube Rifle Scope, First Focal Plane |
| Other details | |
| Magnification Minimum | 3x |
| Magnification Maximum | 18x |
| Sport Type | Outdoor |
| Product Style | F1 MOA-C |
Other Nightforce rifle scopes
How it compares
This product against the closest alternatives we track in rifle scopes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Nightforce NX6 3-18x50mm F1 RiflescopeThis product | - | - | 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 Nightforce C733
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What is the tube diameter on the NX6 3-18x50?
30mm, lighter than the 34mm tube used on the higher-magnification NX6 6-36x50 model.
What click value does this scope use?
.250 MOA clicks with the MOA-C first focal plane reticle.
Does it have illumination?
Yes, DigIllum illumination with red or green lighting, five brightness levels, auto shut-off, and memory recall.