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Monstrum Beast 3-15x44 Rifle Scope with Side Focus and Offset Scope Mount

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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, May 16
Order within 15 hours and 45 minutes
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Style: FIB02 Reticle


Features

  • Mid power variable optic MPVO from 3-15x magnification and a wider 44mm objective lens allowing for more light transmission and a wider field of view
  • Features a fiber optic reticle with a fiber optic tube that runs along the back of the crosshair to channel light from an LED light source to the center of the reticle. This allows it to generate a daylight bright center dot many times brighter than those found in more commonly used etched or wire illuminated reticle systems.
  • Includes a side focus parallax adjustment dial - that allows for sharper focus of the target image, elimination of parallax, and range estimation
  • Available in multiple newly designed second focal plane options: FIB01, FIB02 and FIB03 reticle. Second focal plane reticles remain the same size at all magnification levels for high visibility at all magnifications.
  • Scope comes in a 30mm tube configuration and includes a Monstrum one piece cantilever scope mount. Also comes with a set of bikini lens covers.

Brand: Monstrum


Color: Black


Style: FIB02 Reticle


Material: Metal


Magnification Maximum: 15 x


Objective Lens Diameter: 44 Millimeters


Magnification Minimum: 3 x


Compatible Devices: Rifle, Shotgun


Mounting Type: Cantilever Mount


Night vision: No


Magnification Maximum: 15 x


Objective Lens Diameter: 44 Millimeters


Magnification Minimum: 3 x


Compatible Devices: Rifle, Shotgun


Mounting Type: Cantilever Mount


Night vision: No


Thread Type: 1/4"-20 UNC


Reticle Type: Dot


Color: Black


Product Style: FIB02 Reticle


Lens Color: Black


Brand Name: Monstrum


Manufacturer: Monstrum


UPC: 810198401776


Manufacturer Part Number: SBA31544B-FIB02


Unit Count: 1.0 Count


Material Type: Metal


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Value!
Style: FIB02 Reticle
Hands down the best scope brand you can buy in their price range, all the features you want without breaking the bank, this is my 4th scope from Monstrum and they havent let me down yet!!!
Reviewed in the United States on March 31, 2026 by Duck00

  • Nice fiber - go with the 4-16 beast instead
Style: FIB02 Reticle
This scope weighs 25oz. The 4-16 beast is much better than the beast 3-15 so just go with that one. It's easier to get behind at all magnifications and the field of view seems better or the same also. The 16 is also much greater than the x15. It doesn't make sense to go with the 3-15. It's also clearer. ... show more
Reviewed in the United States on April 4, 2026 by Felipe V.

  • Scope
Style: FIB02 Reticle
Heavy but great scope
Reviewed in the United States on April 10, 2026 by charlesswiger

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