Will it work for less than 20 yards?

It's three power so...at 20 yards I'd suggest open eye.

Is this clear with a stigmatism

Yes! Big difference. Without long explanation this works basically like a standard scope as opposed to the reflecting light of a red dot. This also means you get an etched reticle that works fine without illumination.. still gives perfect black reticle with dead batteries. I have their older model and it solved my astigmatism problem with red dots.

What kind of batteries dose it take?

Well uh, as it states on Amazon in the description....cr2032.

What would be the best fit riser to get for this optic?

It would depend on the person and weapon it's being put on. I got a low Mount riser the my AR but that was for the way I shoot. Will have to chance it and hope the one you get works for you.

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Monstrum P330-B Marksman 3X Prism Scope

Product ID: 769059093

Details

Brand
Monstrum
Color
Black
Compatible Devices
Rifle
Item Weight
17 Ounces
Magnification Maximum
3 x
Magnification Minimum
3 x

🎯Glass prism optics for crisp, clear sight up to 300 yards

🔍3x magnification for sharp mid-range targeting

🛡️Single piece machined aluminum for ultimate durability

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SAR 943

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Description

🎯 Lock, Aim, Dominate – See the Future of Precision

BUILT TO ENDURE - Crafted from a single piece of machined aluminum, combining lightweight design (17 oz) with military-grade toughness.
LIFETIME CONFIDENCE - Backed by Monstrum’s lifetime warranty—gear up knowing your scope is built to last a lifetime.
CRYSTAL CLEAR OPTICS - Advanced glass prism system outperforms traditional lenses in clarity and compactness—see your target, not the scope.
PRECISION AT A GLANCE - 3x magnification with 30mm objective lens delivers razor-sharp target acquisition up to 300 yards.
ALWAYS VISIBLE RETICLE - Reticle remains visible with or without illumination, ensuring flawless aiming in any lighting condition.

The Monstrum P330-B Marksman 3X Prism Scope is a cutting-edge tactical optic featuring a 3x magnification and a 30mm objective lens. Utilizing a glass prism optical system, it offers superior clarity in a compact form factor. Built from a single piece of machined aluminum, it weighs just 17 ounces while providing rugged durability. The reticle is visible with or without illumination, perfect for any lighting environment. Designed for fast target acquisition up to 300 yards, this scope is backed by a lifetime warranty, making it a reliable choice for serious hunters and tactical professionals.

Specifications

ASIN	B0BW7MYSBN
Amazon Bestseller	#794,292 in Electronics ( See Top 100 in Electronics ) #1,015 in Rifle Scopes
Brand Name	Monstrum
Color	Black
Compatible Devices	Rifle
Customer Reviews	4.2 4.2 out of 5 stars (80)
Eye Relief	88.9 Millimeters
Field Of View	39.3 Feet
Item Display Weight	480 Grams
Item Weight	17 Ounces
Lens Color	black
Magnification Maximum	3 x
Magnification Minimum	3 x
Manufacturer	Monstrum
Manufacturer Part Number	P330B-DX1
Material Type	Aluminum, Glass
Model Name	P330-B
Mounting Type	Picatinny Mount
Night vision	No
Objective Lens Diameter	30 Millimeters
Product Style	DX1 Reticle
Reticle Type	Circle Dots
Sport Type	Hunting
Thread Type	Picatinny
UPC	810088813603

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