
Designated marksmen and special operations sniper teams operating across dynamic urban and mountainous terrain face a persistent optical dilemma. Low-power variable optics (LPVOs) excel at rapid close-quarters target acquisition but lack the resolution and reticle subtensions needed for positive target identification past 800 yards. Conversely, massive 5-25x or 7-35x long-range scopes add excessive weight and length to semi-automatic gas guns and compact precision bolt rifles. Developed directly under the United States Special Operations Command (USSOCOM) Ranging-Variable Power Scope (R-VPS) program—part of the Miniature Aiming Systems-Day Optic contract—Nightforce Optics has released a strictly limited commercial run of just 300 units of the MIL-SPEC ATACR™ 4-20x50mm F1 R-VPS Kit (SKU JQ74-M642-1). Finished in Dark Earth with full military-specification engravings (SU-303/PVS), this turnkey deployment package brings an authentic special operations optical system directly to civilian marksmen and military clone builders.
The Nightforce ATACR 4-20x50mm F1 R-VPS Kit pairs a 300-unit limited-run MIL-SPEC 4-20x50mm FFP riflescope with a Horus TREMOR3™ reticle, 1.54-inch 34mm UltraMount, Accuracy 1st level, field torque kit, and commemorative hard case.
Build Specifications At-A-Glance
- Optical Engine & Magnification: 4-20x50mm First Focal Plane (FFP) configuration featuring Extra-low Dispersion (ED) glass for high contrast and edge-to-edge clarity across mid-to-long-range engagements.
- Reticle System: Non-illuminated Horus TREMOR3™ grid reticle in the First Focal Plane, enabling rapid wind holds, moving target leads, and mil-based ranging without dialing turrets.
- Chassis & Tube Dimensions: 34mm main tube diameter finished in military-spec Dark Earth; overall length of 13.8 inches (351 mm) and mounting length of 5.9 inches (150 mm).
- Turret & Adjustment Architecture: .1 MRAD click values featuring Nightforce’s ZeroStop™ elevation turret with a 360 Brake, 35 MRAD of internal elevation travel, and 23 MRAD of windage adjustment.
- Parallax & Eye Relief: Side parallax adjustment dialing from 10 meters to infinity, paired with a forgiving 3.42 to 3.5 inches of eye relief and an exit pupil ranging from 12.1mm (4x) to 2.5mm (20x).
- Complete Deployment Kit Contents:
- Nightforce UltraMount (1.54-inch height, 34mm diameter, right-hand configuration).
- Tan Accuracy 1st anti-cant level and integrated LED low-light illuminator.
- 100 inch-pound Torque Tool Field Kit, Nightforce Optical Cleaning Kit, and tan flip-up lens caps.
- Berry-compliant tan soft scope case, commemorative hard transport case, and MIL-SPEC operator manuals/field guides.
- Production & Commercial Metrics: Strictly limited to 300 serialized kits worldwide (NSN 1240-01-696-2758 / Model SU-303/PVS); commercial retail pricing sits between $5,500.00 and $7,999.99 USD.
Handling Dynamics and Practical Utility
In field deployment on semi-automatic designated marksman rifles (such as SR-25, M110A1, or SCAR 20S platforms) and short-action bolt guns, the ATACR 4-20x50mm F1 hits an ideal balance of footprint and optical reach. At 13.8 inches long, it leaves generous forward rail space on upper receivers for clip-on thermal or night vision devices without sacrificing magnification power at 20x.
The inclusion of the Horus TREMOR3™ reticle in the first focal plane transforms how fast a shooter can engage multiple targets at varying distances. Instead of breaking cheek weld to dial elevation between a 400-yard and 850-yard steel plate, the operator uses the reticle’s rapid wind-dot grid to hold elevation and windage simultaneously. The factory-included Accuracy 1st level mounts directly to the 34mm tube, giving the shooter immediate visual confirmation that the rifle is plumb before breaking a long-range shot.
Mounting the optic out of the box requires zero guesswork. Nightforce includes the 1.54-inch 34mm UltraMount alongside a 100 inch-pound field torque tool kit, allowing shooters to install, level, and torque the entire optical assembly to exact military specifications right at the bench or in the field.
Target Operator Professional Profile
The Nightforce ATACR 4-20x50mm F1 R-VPS Kit is built for military clone enthusiasts, precision semi-automatic marksmen, long-range competitors, and collectors seeking an authentic, serialized USSOCOM contract optic system.
Competitive Market Landscape
While commercial variants of the ATACR 4-20x50mm F1 retail around $3,000 to $3,450 as bare optics, the R-VPS Kit delivers genuine MIL-SPEC contract engravings (SU-303/PVS), Dark Earth anodizing, a 34mm UltraMount, an Accuracy 1st level, and a full field maintenance kit in a 300-unit collector run.
Definitive Field Assessment
The Nightforce Limited Run ATACR 4-20x50mm F1 R-VPS Kit is a turnkey special operations sighting system with proven military pedigree. By pairing bombproof 34mm ED glass mechanics with the Horus TREMOR3 reticle, a 1.54-inch UltraMount, and every essential field tool inside a commemorative hard case, Nightforce offers marksmen a rare opportunity to field an authentic USSOCOM R-VPS configuration.
Product Specification Summary Table
| Specification / Feature | Nightforce ATACR 4-20x50mm F1 R-VPS Kit (SKU: JQ74-M642-1) |
| Military Designation / NSN | USSOCOM R-VPS (SU-303/PVS) / NSN 1240-01-696-2758 |
| Magnification & Objective | 4–20x Variable / 50mm ED Objective Lens |
| Focal Plane & Reticle | First Focal Plane (FFP) / Horus TREMOR3™ (Non-Illuminated) |
| Tube Diameter & Finish | 34mm Main Tube / MIL-SPEC Dark Earth |
| Turrets & Travel Range | .1 MRAD ZeroStop™ w/ 360 Brake (35 MRAD Elev / 23 MRAD Wind) |
| Dimensions & Weight | 13.8″ Overall Length / 33.6 – 36.6 oz (Scope Only) |
| Included Mount & Tools | 1.54″ 34mm UltraMount, Accuracy 1st Level & LED, 100 in-lb Torque Kit |
| Cases & Production Run | Commemorative Hard Case + Berry-Compliant Soft Case / 300 Units Total |
