Description
Nightforce ATACR 4-20x50 F1 ZeroStop .1 Mil-Radian DigIllum- PTL TReMoR3 C637 combines advanced engineering with practical features for serious shooters. Built from aerospace-grade 6061-T6 aluminum, this scope withstands harsh environments while maintaining precision. The First Focal Plane (FFP) reticle allows for accurate range estimation at any magnification, making it a reliable choice for various shooting scenarios. With innovative ZeroStop technology, quick adjustments return to zero with ease, essential for maintaining accuracy during intense shooting sessions.
Multi-coated ED glass enhances light transmission and color contrast, ensuring bright and clear images even in low-light conditions. Weighing only 35.2 oz, it remains lightweight for extended use, while the integrated throw lever allows for swift changes in magnification. This scope is designed for both experienced marksmen and those new to precision shooting, offering user-friendly features without compromising on performance.
Features – Key Benefits Bullets
- RUGGED CONSTRUCTION for maximum durability in extreme conditions.
- OPTICAL INDEXING ensures superior image clarity and precision.
- ZERO STOP TECHNOLOGY provides quick return to your original zero for hassle-free adjustments.
- MULTI-COATED ED GLASS enhances color contrast and light transmission for bright images.
- FIRST FOCAL PLANE RETICLE allows for accurate range estimation at any magnification.
- SMOOTH OPERATION guarantees consistent adjustments without integrity loss.
- USER-FRIENDLY DESIGN with an integrated throw lever for quick magnification changes.
- LIGHTWEIGHT DESIGN weighing only 35.2 oz, making it easy to carry on long trips.
Technical Specifications
| Feature | Details |
|---|---|
| Magnification Range | 4x - 20x |
| Objective Diameter | 50mm |
| Tube Size | 34mm |
| Weight | 35.2 oz |
| Length | 13.9 inches |
| Eye Relief | 3.5 inches |
| Field of View | 4x: 23.6 ft @ 100 yards, 20x: 6.1 ft @ 100 yards |
| Elevation Adjustment | 130 MOA / 38 MRAD |
What’s in the Box?
- Tenebraex Flip Up Covers
- Cleaning Fob / Cleaning Cloth
- Multi-Tool
- Power Throw Lever
- Stickers
- Owner's Manual
- Windage Beauty Ring
- Sunshade
Customer Reviews
“The clarity is unmatched! Perfect for long-range shots.”
“ZeroStop is a game-changer for quick adjustments.”
“Solid build and excellent optical performance.”
FAQ
How does the ZeroStop feature work?
The ZeroStop feature allows you to set a mechanical stopping point at your chosen zero, enabling instant return to zero after adjustments. This is especially beneficial for precision shooting in varying conditions.
Is this scope suitable for low-light conditions?
Yes, the multi-coated ED glass and precise optical design provide excellent light transmission, making it ideal for low-light settings, ensuring you maintain clarity even during dawn or dusk.
Similar Models
Looking for other quality optics? Explore our full Nightforce lineup to find the perfect fit for your shooting needs, including models like the Nightforce NXS 5.5-22x56 for unparalleled versatility. Discover the complete collection that caters to every shooter’s requirements!
Our Guarantees
FREE Fast Shipping Over $99
Enjoy complimentary expedited shipping on all orders over $99.
Secure Payments
Shop with confidence using our encrypted payment processing.
High Quality or Money Back
Not satisfied with your purchase? We'll refund your money, no questions asked.
Top-Notch Support
Our expert team is available to answer all your questions and provide assistance.
What Our Customers Say
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)