Leupold Mark 4HD 2.5-10x42
- Rifle Scope
- 42 mm
- Hunting
- Aluminum
- Better rated than 58%
A clear, well-built first focal plane scope that reviewers with experience on premium glass rate favorably against higher-priced competition.
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How it ranks among the 359 rifle scopes we track
4.6★ across 12 Amazon ratings, Bayesian-smoothed toward the category average.
12 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 first focal plane 2.5-10x42mm riflescope in a 30mm tube, model 183738, with an illuminated TMR reticle, motion-sensor illumination shutoff and USA-based manufacture.
This revives the Mark 4 name on a modern optical platform rather than reissuing the older military-grade line, a distinction more than one reviewer with prior Mark 4 experience calls out directly. At 4.6 stars from 12 ratings, the feedback leans toward buyers who already know the price point and specifically compare it to higher-end European glass.
- First focal plane illuminated TMR reticle
- M5C3 turret system with locking zero
- 100 percent waterproof, fogproof and shockproof
- Motion Sensor Technology extends battery life
Who it's for
Suits hunters and long-range shooters who want first focal plane ranging at any magnification and are comparing options in the same tier as premium European scopes. Less relevant for anyone on a tight budget, since reviewers position it against high-end glass rather than entry-level scopes.
What buyers say
From Amazon customer reviews.
Owners with prior Mark 4 experience describe the new version as an improvement on the old military-era line rather than a rebadge, and several compare the glass favorably to Schmidt and Bender and Vortex Viper scopes. One reviewer noted they had not yet put it through extensive hard use, so long-term durability feedback is limited.
Strengths and trade-offs
Drawn from this product's published specifications.
- First focal plane keeps ranging accurate at any zoom
- Motion-sensing illumination shutoff to save battery
- Glass clarity compares well to premium European scopes
- Designed, machined and assembled in the USA
- Small 12-review sample limits long-term zero retention data
- Premium price positioning noted against high-end glass comparisons
Performance notes
Because the reticle is first focal plane, it scales with magnification so range estimation stays accurate at any zoom level. Motion Sensor Technology shuts off the illuminated reticle after five minutes of inactivity and reactivates as soon as movement is detected, meant to extend battery life without the shooter managing it manually.
Specifications
| Brand | Leupold |
|---|---|
| Model | 183738 |
| Dimensions & fit | |
| Objective Lens Diameter | 42 mm |
| Item Weight | 1.58 pounds |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Matte Finish |
| Compatibility & installation | |
| Mounting Type | Picatinny Mount |
| Compatible Devices | Rifle |
| Included components | |
| Included Components | Riflescope |
| Other details | |
| Sport Type | Hunting |
| Reticle Type | FFP Illum. TMR (183738) |
| Night vision | No |
| Product Style | FFP Illum. TMR (183738) |
| Field Of View | 42.2 Feet |
| Item Type Name | Riflescope |
Other Leupold rifle scopes
How it compares
This product against the closest alternatives we track in rifle scopes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Leupold Mark 4HD 2.5-10x42This product | 4.6 / 5 | 12 | 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 |
Similar rifle scopes from other brands
Questions about the Leupold 183738
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Is the reticle on the Mark 4HD first or second focal plane?
First focal plane, so the reticle scales with magnification for consistent range estimation.
Does the illumination turn off automatically to save battery?
Yes, Motion Sensor Technology deactivates the illuminated reticle after five minutes of inactivity and reactivates on movement.
Where is this scope made?
Leupold states it is designed, machined and assembled in the USA.