Riton 3 Primal 3-9x40 EER

HuntingSFPMOA1-inch tube

The Riton 3 Primal 3-9x40 EER is a 3-9×40 SFP scope on a 1-inch tube with a Heavy Duplex reticle and 0.25 MOA clicks. Across its range the exit pupil runs from an estimated 13.3 mm down to 4.4 mm at 9×, where the twilight factor is 19. It is the heaviest of the 8 hunting scopes here, at 26.88 oz.

Approx. price: ~$280
Magnification: 3-9×
Objective: 40 mm
Weight: 26.88 oz

Best for

Big-game hunting inside about 400 yards

Manufacturer’s product page — not an affiliate link. Price and availability there may differ from our snapshot.

Derived optics

estimated

Exit pupil: 13.3–4.4 mm (3×–9×)
Twilight factor: 19 at 9×
Zoom ratio: 3×

Exit pupil and twilight factor are computed from the published magnification and objective diameter, not measured. Real exit pupil is also capped by the erector at low magnification, and coatings and glass quality move low-light performance in ways the formula cannot see — read these as comparisons between layouts, not verdicts on scopes.

Specifications

Manufacturer-published figures, read from ritonoptics.com (product page spec table, 2023 Primal Series manual PDF, product photos). MOA/MRAD conversions use 3.438 MOA per mil.

Magnification: 3-9×
Objective lens: 40 mm
Focal plane: SFP
Reticle: Heavy Duplex
Illuminated: No
Turret unit: MOA
Per click: 0.25 MOA (0.26″ at 100 yd)
Elevation travel: 80 MOA (≈23.3 MRAD)
Zero stop: No
Turrets: Capped
Parallax: Fixed 100 yd
Eye relief: 5″
Field of view: 33–11 ft at 100 yd
Tube: 1-inch
Length: 12.9″
Weight: 26.88 oz
Warranty: Riton Limited Lifetime Warranty

Features

SFP
MOA
1-inch tube
Capped turrets
Fixed parallax
Lifetime warranty

For it, on paper

+ 5 in of eye relief - built for muzzleloaders, slug guns and hard-recoiling rifles
+ 80 MOA of adjustment range with 1/4 MOA clicks
+ Capped, zero-resettable turrets
+ Dual Throw Lever System on the magnification ring
+ Nitrogen purged and rated airgun-safe by Riton
+ Riton Limited Lifetime Warranty

Against it, on paper

− Published weight of 26.88 oz (1.68 lb) is unusually heavy for a 1-inch 3-9x40
− Fixed 100 yd parallax: the image softens inside 50 yd
− Non-illuminated Heavy Duplex reticle with no holdover references
− Windage travel is not listed separately from the single 80 MOA adjustment figure