Description
Nightforce ATACR F1 4-20x50 Riflescope C644 features a first focal plane design that allows for accurate reticle subtension use across all magnification levels. This riflescope is equipped with a 50mm objective lens, enhancing light transmission for clear visibility in low-light conditions. Built for precision shooting, it offers quick adjustments with tactical MIL turrets for windage and elevation, ensuring you can adapt on the fly. The rugged construction withstands the toughest environments, providing reliability you can trust.
Weighing in at just 35.2 oz, the Nightforce ATACR is designed for ease of handling during extended outings while maintaining exceptional performance. The illuminated reticle enhances target acquisition in low-light settings, making it a preferred choice for tactical shooting and hunting enthusiasts. With a maximum elevation adjustment of 38 MIL, it caters to long-range shooting needs, allowing for precise dialing in various conditions.
Key Features:
- ENHANCED CLARITY for hunting at dawn with a 50mm objective lens that provides exceptional light transmission.
- FIRST FOCAL PLANE RETICLE allows for precise holdovers and bullet drop compensation at any magnification setting.
- WATER AND FOG PROOF construction ensures reliable performance in any weather conditions, keeping your view clear during critical moments.
- TACTICAL MIL TURRET provides quick adjustments in the field, making it easier to account for windage and elevation changes.
- ILLUMINATED RETICLE enhances visibility in low-light environments, perfect for dusk hunting scenarios.
- LIGHTWEIGHT DESIGN at just 35.2 oz reduces overall load, ensuring ease of handling and transport during extended outings.
- MAX ELEVATION ADJUSTMENT of 38 MIL allows for precise long-range shooting, accommodating diverse shooting conditions.
- OPTIMIZED EYE RELIEF of 3.5 inches ensures comfort during prolonged use, preventing strain on your eyes.
Technical Specifications Table
| Feature | Specification |
|---|---|
| Magnification Zoom | 4X to 20X |
| Objective Lens Size | 50mm |
| Exit Pupil | 8.3mm to 2.5mm |
| Eye Relief | 3.5" |
| Field of View @ 100 Yards | 23.6 ft - 6.1 ft |
| Tube Diameter | 34mm |
| Turret Type | Tactical MIL Turret |
| Click Value | .1 MRAD |
| Illuminated Reticle | Yes |
| Reticle Focal Plane | 1st Focal Plane |
| Weight | 35.2 oz |
| Length | 13.9" |
| Max Elevation Adjustment | 38 MIL |
| Max Windage Adjustment | 29 MIL |
What’s in the Box?
- Lens covers
- Padded case
- Neck strap
Customer Reviews
“The clarity of this scope is unmatched. I can spot targets at dusk with ease!” – Alex T.
“Perfect for tactical shooting, the adjustments are smooth and precise.” – Jamie L.
“Lightweight yet durable, it’s my go-to scope for all my outdoor competitions.” – Chris B.
FAQ
How does the Nightforce ATACR perform in low light?
The illuminated reticle offers enhanced visibility, allowing you to effectively engage targets even in low-light situations, making it perfect for dusk hunting.
What maintenance does this riflescope require?
To maintain optimal performance, regularly clean the lenses with a microfiber cloth and ensure the turret adjustments are free of debris. The robust design helps resist moisture and fog.
How does this scope compare with other brands?
While there are many options available, the Nightforce ATACR combines advanced features with user-friendly operation. Its first focal plane design and tactical turrets set it apart for serious shooters.
Similar Models
Looking for more precision? Explore our extensive Nightforce lineup, including models like the Nightforce NX8 4-32x50 for enhanced magnification and the Nightforce SHV 5-20x56 for versatile shooting. Discover our full collection for exceptional optics tailored to your adventures.
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Optics Knowledge Center
Understanding Rifle Scope Basics
Magnification
Magnification refers to how much larger an object appears through the scope compared to the naked eye. Fixed power scopes have one magnification setting, while variable power scopes offer a range (e.g., 3-9x).
Objective Lens
The objective lens is the front lens that gathers light. Larger objective lenses (measured in mm) gather more light, providing brighter images in low-light conditions but add weight and require higher mounting.
Reticle
The reticle (crosshair) is the aiming point inside the scope. Modern scopes offer various reticle designs, from simple duplex crosshairs to complex ballistic reticles with holdover points for different distances.
Adjustments
Rifle scopes have turrets for windage (horizontal) and elevation (vertical) adjustments. These are measured in MOA (minutes of angle) or MRAD (milliradians) and allow precise aiming adjustments.
Proper Scope Mounting Guide
Select the Right Rings & Base
Choose rings that match your scope's tube diameter (typically 1", 30mm, or 34mm). Select a base compatible with your rifle's receiver. For heavy-recoiling rifles, opt for stronger mounts.
Install the Base
Clean the receiver and base thoroughly. Apply a small amount of blue Loctite to the screws. Attach the base to the receiver and torque the screws to manufacturer specifications.
Attach the Rings
Attach the bottom halves of the rings to the base. Place the scope in the rings and loosely attach the top halves. Don't fully tighten yet.
Set Eye Relief & Level
Position the scope for proper eye relief (3-4 inches) in your normal shooting position. Ensure the reticle is level using a scope leveling tool. Once positioned correctly, tighten the rings evenly in a cross-pattern.
Scope Zeroing Tips
Start Close
Begin zeroing at a shorter distance (25-50 yards) to ensure you're on paper before moving to your desired zero distance (typically 100 yards).
Use a Stable Rest
Always zero your rifle from a stable shooting position using a bench rest, sandbags, or a shooting rest to eliminate as much human error as possible.
Fire Groups
Fire 3-shot groups before making adjustments. This provides a more accurate representation of where your rifle is shooting than single shots.
Make Deliberate Adjustments
Know your scope's adjustment values (typically 1/4 MOA per click). If your group is 2 inches low at 100 yards, you'll need to adjust up 8 clicks (for a 1/4 MOA scope).
Confirm Your Zero
After making adjustments, fire another group to confirm your zero. Repeat the process until your point of impact matches your point of aim.
Document Your Settings
Once zeroed, record your settings including distance, ammunition used, and environmental conditions for future reference.
Optics Maintenance & Care
Cleaning Lenses
- Start by blowing or brushing away loose particles
- Use a lens pen or microfiber cloth for fingerprints
- For stubborn dirt, use lens cleaning solution (never household cleaners)
- Clean with gentle circular motions from center outward
Protecting Your Optics
- Always use lens caps when not in use
- Store in a dry place with silica gel packets
- Avoid extreme temperature changes
- Use a quality scope cover in harsh conditions
Regular Maintenance
- Check and tighten mount screws periodically
- Inspect O-rings and seals for damage
- Verify zero after rough handling
- Clean the exterior with a damp cloth
What to Avoid
- Never use fingers to touch lenses
- Avoid paper products (tissues, paper towels) on lenses
- Don't use acetone, alcohol, or household cleaners
- Never disassemble your scope (voids warranty)