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NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, Color: Black, Tube Diameter: 34 mm w/ Free S&H — 5 models

NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-C, Black, C643
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-C, Black, C643
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-C, Black, C643
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-XT, Black, C644
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-XT, Black, C644
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-XT, Black, C644
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, 1 MIL, ZeroStop, CW, TREMOR3, Black, C637
NightForce ATACR 4-20x50 F1 Rifle Scope, 1 MIL, ZeroStop, CW, TREMOR3, Black, C637
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
1 of 26 images
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
2 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
3 of 26 images
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
4 of 26 images
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
5 of 26 images
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
6 of 26 images
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
7 of 26 images
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
8 of 26 images
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
9 of 26 images
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
10 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
11 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
12 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
13 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
14 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
15 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
16 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-C, Black, C643
17 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-C, Black, C643
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-C, Black, C643
18 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-C, Black, C643
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-C, Black, C643
19 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-C, Black, C643
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
20 of 26 images
NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-XT, Black, C644
21 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-XT, Black, C644
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-XT, Black, C644
22 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-XT, Black, C644
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-XT, Black, C644
23 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .1 MIL, ZeroStop, CW, MIL-XT, Black, C644
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
24 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, .25 MOA, ZeroStop, CW, MOAR, Black, C642
NightForce ATACR 4-20x50 F1 Rifle Scope, 1 MIL, ZeroStop, CW, TREMOR3, Black, C637
25 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, 1 MIL, ZeroStop, CW, TREMOR3, Black, C637
NightForce ATACR 4-20x50 F1 Rifle Scope, 1 MIL, ZeroStop, CW, TREMOR3, Black, C637
26 of 26 images
NightForce ATACR 4-20x50 F1 Rifle Scope, 1 MIL, ZeroStop, CW, TREMOR3, Black, C637

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Questions & Answers
What size scope rings should I get? Manufacturer Answer

The mounting hardware selection will be based on your individual weapon platform, please contact Nightforce Optics Customer Service to ensure you get setup with the correct mounting hardware.

by NightForce, Manufacturer, February 9, 2022
Tube dia.? Manufacturer Answer

The body tube diameter is 34mm.

by NightForce, Manufacturer, July 21, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
ATACR 4-20 worth the wait! by Jabroni, December 18, 2022
Have two other ATACR models (5-25, 7-35) and the 4-20 is in my opinion the best of the bunch thus far. The tunneling is minimal to absent compared to its larger siblings. I am glad I waited so long for this.
4/5 found this helpful
Helpful Positive Review
clearest scope by sigfan, Verified Owner, May 1, 2024
Unbelievable clear. Built well. Now i want to buy another nightforce on another power.
1/1 found this helpful
Helpful Positive Review
Fantastic scope from a great dealer by Joe Paranee, Verified Owner, February 3, 2025
Night force always knocked it out of the park and optics plan has the best customer service
1/1 found this helpful
Helpful Positive Review
ATACR 4-20=50 by Zeke, Verified Owner, March 1, 2024
Reticle cross hairs not usable until 6 power. A little on the heavy side. Good clarity but could be better for the price.
1/1 found this helpful
Most Recent Reviews
Atacr 4x20 mil by Steven Pearson, Verified Owner, February 20, 2026
Awesome scope! I put it on my 6.5 creedmore and hit 1100 yards on my first go. Love it!
Most Recent Reviews
crystal clear glass by David, Verified Owner, March 12, 2024
Exactly what you would expect when you order this Nightforce! Glass is great, no complaints about anything!
Read All 6 Reviews

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Product Info for NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane

New for 2021, the 4-20x50 F1 fills an important magnification range in the ATACR line. Equally at home atop a bolt action or a semi-automatic rifle, the 4-20x50 F1 is smaller and lighter than the 5-25x56 F1 while offering a 25% improvement in magnification over the 4-16x42 F1. With Digillum, a ZeroStop turret, power throw lever, ED lenses, and 20x max magnification, the ATACR 4-20x50 F1 is our apex mid-power scope.image

Specifications for NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane:

Manufacturer: Nightforce
Objective Lens Diameter: 50 mm
Magnification: 4 - 20 x
Tube Diameter: 34 mm
Reticle Focal Plane: First Focal Plane (FFP)
Exit Pupil: 2.5 - 8.3 mm
Illumination Color: Red
Finish: Matte
Field of View, Linear: 6.1 - 23.6 ft at 100 yds
Eye Relief: 3.5 in
Color: Black
Weight: 35.2 oz
Length: 13.9 in
Parallax: 11 yds to infinity
Illumination Type: Digillum
Battery Type: Stand Alone Lithium
Magnification Type: Variable
Condition: New
W/E Travel at 100 Yds: 100 - 130 MOA

Package Contents:

  • NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane

NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane Orderable Models

List of Orderable Models

  • NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, Mil-C F1 Reticle, Black, C643 , MPN: C643 , UPC: 847362019543 , Code: NF-RS-ATCR42050-C643
  • NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOA-XT Reticle, Black, C645 , MPN: C645 , UPC: 847362019567 , Code: NF-RS-ATCR42050-C645
  • NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, Hourus TREMOR3 Illuminated Reticle, Black, C637 , MPN: C637 , UPC: 847362017969 , Code: NF-RS-ATCR42050-C637
  • NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, Mil-XT Reticle, Black, C644 , MPN: C644 , UPC: 847362019550 , Code: NF-RS-ATCR42050-C644
  • NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOAR F1 Reticle, Black, C642 , MPN: C642 , UPC: 847362019536 , Code: NF-RS-ATCR42050-C642

NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane Unavailable & Discontinued Models

List of Unorderable Models

  • USED, NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, Hourus TREMOR3 Illuminated Reticle, Black, C637 , MPN: C637-EDEMO , Code: NF-RS-ATCR42050-C637-EDEMO-IN-D
  • DEMO, NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, MOAR F1 Reticle, Black, C642 , MPN: C642-DEMO , Code: NF-RS-ATCR42050-C642-DEMO
  • DEMO, NightForce ATACR 4-20x50mm ZeroStop Rifle Scope, 34mm Tube, First Focal Plane, Hourus TREMOR3 Illuminated Reticle, Black, C637 , MPN: C637-DEMO , Code: NF-RS-ATCR42050-C637-DEMO-OB-A
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Last updated 2026-09-10 UTC.