Long Range Hunting Scopes | 4-20x Illuminated, 50mm Objective, 30mm Tube, Side Focus, 1/4 MOA BEM4-20X501SFIR
The BEM4-20X50 SFIR Rifle Scopes are positioned as a high-power precision optic solution for shooters who require extended magnification, accurate adjustment capability, and reliable optical performance in demanding outdoor environments.
The 4-20X magnification range provides excellent versatility for shooters who need both field flexibility and long-range precision:
4X low magnification provides a practical field of view for target searching, hunting movement, and general outdoor shooting.
20X high magnification delivers enhanced target observation and precision aiming capability for longer-distance shooting.
Compared with conventional hunting scopes in the 3-9X or 4-16X categories, the BEM4-20X50 provides a wider magnification range, allowing shooters to transition from general hunting scenarios to more demanding precision applications.
The side focus parallax adjustment system from 10 yards to infinity helps shooters achieve clearer image focus at different distances while reducing parallax error. Combined with a 50mm objective lens, illuminated special reticle, 30mm one-piece tube, push-pull self-locking system, broadband multi-coated optics, and precise adjustment capability, this scope delivers a professional solution for long-range hunting and precision shooting markets.
OVERVIEW
Key Advantages and Features
Extended 4-20X Magnification Range
- The 4-20X magnification range provides excellent flexibility from hunting situations to long-range precision shooting.
- The lower magnification allows fast target acquisition, while the higher magnification provides detailed target identification and improved aiming precision.
Large 50mm Objective Lens
- The 50mm objective lens improves light collection capability and supports a brighter sight picture.
- This makes the scope suitable for outdoor shooting environments where lighting conditions change throughout the day.
Side Focus Parallax Adjustment
- The side focus system allows shooters to adjust focus from close distances to infinity.
- This helps minimize parallax error and improves aiming consistency during precision shooting.
Illuminated Special Reticle
- The illuminated reticle improves visibility in low-light conditions.
- The customizable reticle platform allows adaptation for different hunting, shooting, and market requirements.
Reliable 1/4MOA Adjustment System
- The elevation and windage adjustment system provides accurate zeroing capability.
- The 1/4MOA click value allows shooters to make precise corrections during sight adjustment and field shooting.
Push-Pull Self-Locking System
- The locking mechanism helps prevent accidental turret movement during transportation or field use.
- This improves reliability for hunters and outdoor shooting enthusiasts.
Application Scenarios
Long-Range Hunting Applications
The BEM4-20X50 SFIR Rifle Scopes are designed for hunters who require higher magnification for open fields, mountains, and extended-distance shooting environments.
The 4X setting provides enough field awareness for target searching and tracking, while the 20X magnification allows hunters to observe target details and improve aiming precision for challenging shots. The illuminated reticle improves aiming visibility during dawn, dusk, and changing lighting conditions.
Varmint and Predator Hunting
The wide magnification range makes this optic suitable for varmint and predator hunting applications where shooters need detailed observation and precise shot placement.
The 20X maximum magnification provides additional capability for smaller targets at longer distances, while the lower magnification maintains practical field usability.
Precision Shooting Applications
The BEM4-20X50 SFIR provides a reliable solution for shooters who require increased magnification and accurate adjustment control for range shooting and precision practice.
The 1/4MOA adjustment system allows shooters to make controlled corrections during zeroing and shooting sessions.
Sporting Rifle Applications
The durable one-piece tube construction and versatile magnification range make this scope suitable for advanced sporting rifle applications.
It provides a balanced solution for shooters who require higher magnification without moving into extremely specialized competition optics.
Customizable for Your Brand
Logo and firmware customization available
OEM/ODM support with low MOQ
Custom language interface and startup screens
Customizable Features
- Reticle Design Supports customized hunting, BDC, MIL, and tactical reticle solutions
- Logo Branding Enables private label Rifle Scopes programs
- Lens Coating Options Allows customized optical performance positioning
- Turret Configuration Supports MOA/MIL adjustment preferences
- Illumination System Supports customized illuminated reticle solutions
- Housing Finish Provides brand appearance differentiation
- Packaging Design Customized retail packaging and accessories
- OEM/ODM Development Suitable for customized long-range rifle scope projects
Parameters
| Product Code | BEM4-20X501SFIR |
| Magnification | 4X-20X |
| Weight (g) | 820g |
| Length (mm) | 338mm |
| Objective Lens Diameter | 50mm |
| Eye Relief (mm) | 90-102mm |
| Tube Diameter | 30mm |
| Illumination | Electronic Lighting: Red light |
| Field of View @100yds | 4X:7.5° / 20X:1.3° @100yds |
| Reticle | Special Reticle |
| Lens Coating | Broadband Multi-coated (Green Film) |
| Side Parallax | Side Parallax 10yds ~ ∞ |
| Elevation Adj. Range | ±40MOA, 1 Click 1/4MOA |
| Windage Adj. Range | ±40MOA, 1 Click 1/4MOA |
| Locking Method | Push-Pull Self-Locking |
| Shock-Proof | Yes |
| One-Piece Tube | Yes |
| Adjustable Diopter | Yes |
| Nitrogen Filled / Fog Proof | Yes |
| Light Transmission | 92% |
| Single Surface Transmission | 99.5% |
| Diopter Adjustment | ±2D |
For B2B buyers, customization options include reticle design, logo branding, optical coating, illumination configuration, packaging, accessories, and OEM/ODM development.
Contact us to discuss your customized Rifle Scopes solution for hunting, tactical shooting, competition, or private label optic markets.
