Description
When it comes to Extreme Long Range, nothing beats the March Genesis 4-40x52 Riflescope. Not only does the Genesis feature a massive magnification range but the scope allows for an incredible 296 MOA elevation adjustment range! The Genesis differs from most other riflescopes in one major factor – the reticle itself cannot be adjusted, any adjustments to the point of impact are made with adjustments to the integral scope base/mount. This is what allows the Genesis to feature such travel range for both elevation and windage!
In addition to the powerful mechanics of the March Genesis 4-40x52 Riflescope, the optics of the scope utilizes March’s HighMaster Lens System with the Super Extra-low Dispersion formula that allows for superior correction of chromatic aberration. Because of this, the resulting sight picture when using the Highmaster Lens System allows for unparalleled edge-to-edge clarity and true-to-life hues. As well as the HighMaster Lens System, the Genesis scope also features another new scope technology – the Temperature Anti-Drift Lens System. This allows the scope to combat the effects of extreme environmental changes in temperature by altering the refractive index of the lenses. The materials used in the Temperature Anti-Drift Lens System ultimately result in a scope that better naturally adapts to environmental changes to keep you on target longer.
Features of the March Genesis 4-40x52 Riflescope
- 296 MOA of elevation travel
- HighMaster Lens System
- Wide Angled Eye Piece
- Temperature Anti-Drift Lens System
- Integrated Mount
- Integrated Picatinny Rail for Mounting Back-Up Optics
Specifications
SKU
D40V52GFIMA-FMA-3-March
UPC
4570058003132
MPN
D40V52GFIMA-FMA-3
Exit Pupil
3.1mm (4x magnification)
1.3mm (4x magnification)
Eye Relief
2.68 inches - 3.39 inches (4x magnification)
2.80 inches - 3.25 inches (40x magnification)
Field of View
31.44 feet @ 100 yards (4x magnification)
3.14 feet @ 100 yards (40x magnification)
Illuminated Reticle
Yes
Package Includes
Flip caps
MD disk
Sunshade
Lens cloth
Fast lever
Magnification Range
4x - 40x
Parallax Adjustment
Side Focus 20m to Infinity
Reticle Position
First Focal Plane
Elevation Turret Details
296 MOA
Scope Finish
Black
Scope Length
13.03 inches
Scope Objective Diameter
52mm
Reticle Details
FMA-3
Scope Tube Size / Mount
N/A
Turret Adjustment (Click Value)
1/4 MOA
Scope Weight
45.14 ounces
Windage Turret Details
96 MOA
Item Condition
New
Product Type
Riflescopes
Scope Turret Rotation
Counter Clockwise (CCW)
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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)