High Speed BBs

  • Home
  • Real Steel
    • AR-15 Builder
    • About AR-15 Suppressors
    • Suppressor Covers
  • Learn About Airsoft
    • Airsoft Guns
    • How Airsoft Guns Work
    • Airsoft Pistols
    • Airsoft BBs
    • Rifle Scopes
    • Tactical Hand Signals
    • Airsoft Snipers
    • Fix Airsoft Guns
    • Game Rules
    • Airsoft Glossary
    • Play Airsoft
      • Find Airsoft Fields Nearby
      • Best Places to Play Airsoft
      • Top Stores
      • Store Finder
        • States & Cities
        • Store Reviews
      • Field Finder
  • Gun Reviews
    • Best Airsoft Sniper Rifles
    • The Coolest Airsoft Guns
    • Best Glock Pistols
    • Top Airsoft CO2 Pistols
    • Best KWA M4 Airsoft AEGs
    • Top Valken Airsoft AEGs
    • SMG Airsoft Guns <$200
    • Spring Airsoft Guns <$100
  • Gear Reviews
    • Best Airsoft BB Reviews
    • Top Tactical Airsoft Vests
    • MOLLE Pouch Reviews
    • Top-rated Airsoft Masks
    • Best Airsoft Goggles
    • Optimal Field Gear
    • Daily Deals & Discounts
    • Build Your Toolkit
  • Shop
    • Airsoft Rifles
    • Airsoft Pistols
    • Airsoft BBs
    • Airsoft Goggles
    • Airsoft Masks
    • Airsoft Tactical Vests
    • Tactical Pouches
You are here: Home / Rifle Scopes / Monstrum 3-9×32 Rifle Scope with Rangefinder Reticle | ZR255 H-Series Offset Scope Mount | Bundle
Monstrum Rifle Scope 1 Monstrum 3-9x32 Rifle Scope with Rangefinder Reticle | ZR255 H-Series Offset Scope Mount | Bundle
Monstrum Rifle Scope 2 Monstrum 3-9x32 Rifle Scope with Rangefinder Reticle | ZR255 H-Series Offset Scope Mount | Bundle
Monstrum Rifle Scope 3 Monstrum 3-9x32 Rifle Scope with Rangefinder Reticle | ZR255 H-Series Offset Scope Mount | Bundle
Monstrum Rifle Scope 4 Monstrum 3-9x32 Rifle Scope with Rangefinder Reticle | ZR255 H-Series Offset Scope Mount | Monstrum Flip Up Lens Cover Set | Bundle
Monstrum Rifle Scope 5 Monstrum 3-9x32 Rifle Scope with Rangefinder Reticle | ZR255 H-Series Offset Scope Mount | Monstrum Flip Up Lens Cover Set | Bundle
Monstrum Rifle Scope 6 Monstrum 3-9x32 Rifle Scope with Rangefinder Reticle | ZR255 H-Series Offset Scope Mount | Monstrum Flip Up Lens Cover Set | Bundle
Monstrum Rifle Scope 7 Monstrum 3-9x32 Rifle Scope with Rangefinder Reticle | ZR255 H-Series Offset Scope Mount | Monstrum Flip Up Lens Cover Set | Bundle

Monstrum 3-9×32 Rifle Scope with Rangefinder Reticle | ZR255 H-Series Offset Scope Mount | Bundle

Was $99.90 - check current price

Check Out Monstrum 3-9×32 Rifle Scope with Rangefinder Reticle | ZR255 H-Series Offset Scope Mount | Bundle. See Great Rifle Scopes By Monstrum.

Shop Deal

Highspeedbbs editors select and review airsoft products independently. We may earn affiliate commissions from buying links, which help support our testing. Support us.

SKU: 5f0f2fd0689e Category: Rifle Scopes Tag: rifle scope
  • Description
  • Additional information

Description

Rifle Scope Product Details

Monstrum 3-9×32 Rifle Scope with Rangefinder Reticle | ZR255 H-Series Offset Scope Mount | Bundle

Rifle Scope Product Features

About this item
Tactical rifle scope providing crystal clear targeting at 3-9x magnification, with a 32mm objective diameter and an eye relief of 3.5-3.8 Inches
Glass rangefinder reticle for on-the-fly range estimation and long distance targeting
Dial controlled reticle illumination in both red and green with multiple brightness intensities
Product Bundle includes Monstrum H-Series One Piece Offset Scope Mount; comparable in weight to a pair of scope rings while maintaining the added rigidity and convenience of a one piece mount; Includes hardened steel Torx mounting hardware for mounting to any Picatinny rail platform.
The Monstrum Tactical S3932-R-RG is a high performance tactical scope, providing crystal clear optics at 3 to 9 times magnification for close to mid range shooting.
Comes with a detachable throw lever for quick magnification adjustment.
It comes equipped with an illuminated Rangefinder reticle which can be viewed in red or green illumination and in multiple brightness intensities, or viewed in black without illumination, for a suitable sight picture regardless of lighting or environment.
Multi-layer lens coating, protects your scope lens from scratches, and fog, while improving the clarity of your vision.
All Monstrum scopes tubes are nitrogen filled for resistance to water and fog.
Includes: 3-9×32 Scope, Detachable Throw Lever, Standard Scope Rings, CR1632A Battery, Lens Cloth, Lens Cover
Reticle: Illuminated Range Finder
Materials: 6061 Aircraft Grade Aluminum
Compatibility: Rifles with Picatinny or Weaver Rails
Scope Range: Close to Mid Range, 300+ Yards
Magnification: 3-9x
Objective Diameter: 32 mm
Tube Size: 1 in
Eye Relief: 3.5-3.8 in
Weight: 13 oz
High Quality Construction
Crafted from aircraft grade aluminum, the scope is both sturdy and lightweight, with a 1 in sealed tube. The scope is 9.6″ in length, 2″ in width, 2″ in height and 12 oz in weight. It comes with lens covers and one 3V CR1632 battery.

About the Monstrum Company

Monstrum is a premium maker for rifle scopes, optics, mounting solutions, and other add-ons used for firearms like rifles and long guns. They style and make their mounts, scopes, and related products by applying elements which are durable and long lasting. This includes the Monstrum 3-9×32 Rifle Scope with Rangefinder Reticle | ZR255 H-Series Offset Scope Mount | Bundle by Monstrum. For more shooting goods, visit their website.

What You Need to Know About Scopes

Rifle scopes enable you to exactly align a rifle at various targets by lining up your eye with the target over a distance. They accomplish this through magnification by making use of a set of lenses inside the scope. The scope’s positioning can be adjusted to account for numerous environmental things like wind speed and elevation to make up for bullet drop.

The scope’s purpose is to help shooters understand exactly where the bullet will hit based on the sight picture you are seeing with the scope as you line up the scope’s crosshair or reticle with the target. Many modern-day rifle scopes have around 11 parts which are located inside and outside of the scope body. These parts consist of the rifle scope’s body, lenses, modification turrets, objective focus rings, and other elements. Learn about the eleven parts of rifle optics.

About Optic Styles

Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The sort of focal plane an optic has identifies where the reticle or crosshair is located in relation to the optic’s magnification. It actually implies the reticle is located behind or before the magnifying lens of the scope. Choosing the very best form of rifle glass is based on what style of hunting or shooting you anticipate doing.

First Focal Plane Scope Facts

Focal plane scopes (FFP) include the reticle in front of the magnification lens. These types of scopes are helpful for:

  • Quick acquisition, long distance types of shooting
  • Shooting circumstances where calculations are small
  • Experienced shooters who recognize their aim point “hold over” and also “lead” correlations for their rifles
  • Shooters who don’t mind the reticle is enlarged and occupies more visual eyesight room than a SFP reticle

Second Focal Plane Scopes

Second focal plane scopes (SFP) come with the reticle to the rear of the magnification lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick measurement.

  • Long distance kinds of shooting where shooters have additional time to make ballistic computations
  • Shooting where most of the shots occur within shorter ranges and spaces
  • Shooters who desire a clearer optic picture without space used up by the enlarged FFP reticle

Zoom for Glass

The amount of zoom a scope offers is identified by the size, thickness, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.

Single Power Lens Optic Info

A single power rifle scope uses a magnification number designator like 4×32. This indicates the zoom power of the scope is 4x power while the objective lens is 32mm. The magnification of this type of scope can not change because it is a fixed power optic.

Variable Power Lens Scopes

Variable power rifle scopes can be tweaked between magnified levels. The power change is accomplished by the power ring part of the scope near the back of the scope by the eye bell.

Rifle Scope Power Level and Range Correlation

Here are some recommended scope powers and the ranges where they may be effectively used. High power glass will not be as useful as lower powered optics due to the fact that too much zoom can be a bad thing. The same relates to extended ranges where the shooter needs enough power to see exactly where to best aim the rifle.

Details on Scope Lens Finishes

All modern rifle scope lenses are coated. There are various types and qualities of lens coverings. Lens covering can be an essential aspect of a rifle’s setup when thinking about high-end rifle optics and scope equipment. The glass lenses are among the most essential pieces of the scope as they are what your eye looks through while sighting a rifle in on the target. The finishing on the lenses protects the lens surface as well as assists with anti glare from excess natural light and color presence.

ED Versus HD Rifle Glass

Some scope brands likewise use “HD” or high-definition lens finishings which use different techniques, elements, polarizations, and chemicals to draw out various colors and viewable definition through the lens. Some scope makers use “HD” to refer to “ED” to signify the lens has extra-low dispersion glass.

Single Covering Versus Multi-Coating

Various optic lenses can likewise have different coatings applied to them. All lenses generally have at least some type of treatment or finishing used to them prior to being used in a rifle scope or optic.

This lens treatment can protect the lens from scratches while lowering glare and other less advantageous things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope manufacturer and how much you paid for it.

Some scope makers likewise make it a point to specify if their optic lenses are coated or “multi” covered. This implies the lens has had numerous treatments applied to them. If a lens receives numerous treatments, it can indicate that a manufacturer is taking numerous actions to combat various natural aspects like an anti-glare finishing, a scratch resistant anti-abrasion finish, followed by a hydrophilic coating. This additionally does not always imply the multi-coated lens is much better than a single covered lens. Being “much better” hinges on the maker’s lens treatment technology and the quality of components used in constructing the rifle optic.

Anti-water Finish for Optics

Water on an optic’s lens does not assist with maintaining a clear sight picture through a scope at all. Numerous top of the line or high-end optic makers will coat their lenses with a hydrophilic or hydrophobic coating. The Steiner Optics Nano-Protection is a fine example of this sort of treatment. It deals with the surface area of the Steiner glass lens so the H2O molecules can not bind to it or produce surface tension. The result is that the water beads sheet off of the scope to keep a clear, water free sight picture.

Glass Mounting Options

Mounting approaches for scopes can be found in a few choices. There are the standard scope rings which are separately mounted to the optic and one-piece mounts which cradle the scope. These various types of mounts also usually come in quick release versions which use manual levers which permit rifle shooters to rapidly mount and remove the scopes.

Hex Key Glass Ring Mounting Solutions

Normal, clamp design mounting scope rings use hex head screws to mount to the flattop style Picatinny scope installation rails on rifles. These types of scope mounts use a couple of separate rings to support the optic, and are made from 7075 T6 billet aluminum which is created for long range accuracy shooting. This type of scope mount is fine for rifles which require a durable, sound mount which will not move no matter how much the scope is moved or abuse the rifle takes.

Quick-Release Cantilever Glass Ring Mounts

These kinds of quick-release rifle scope mounts can be used to rapidly attach and detach a scope from a rifle. A wide range of scopes can also be swapped out if they all use a complementary style mount. The quick detach mount style is CNC crafted from anodized 6061 T6 aluminum and the mounting levers attach nicely to a flat top type Picatinny rail. This lets the scope to be sighted in while on the rifle, removed from the rifle, and remounted while retaining accuracy. These types of mounts are useful and handy for shooting platforms which are carried a lot, to remove the scope from the rifle for protection, or for scopes which are utilized in between a number of rifles. An example of this mount style is the 30mm mount from Vortex Optics. It generally costs around $250 USD

Sealing and Gas Purging for Scope Tubes

Moisture inside your rifle scope can mess up a day of shooting and your costly optic by triggering fogging and developing residue inside of the scope tube. The majority of scopes prevent moisture from entering the scope tube with a system of sealing O-rings which are waterproof.

Rifle Glass Gas Purging

Another element of preventing the accumulation of moisture inside of the rifle scope tube is filling the tube with a gas like nitrogen. Because this space is currently occupied by the gas, the scope is less impacted by climate changes and pressure differences from the outdoor environment which may potentially enable water vapor to seep in around the seals to fill the void which would otherwise be there. These are good qualities of a good rifle scope to look for.

Additional information

Category

Rifle Scopes

Brand

Monstrum

ASIN

B08KSJTXVS

Reviews

Over

Prime

Amazon Prime

Best Sellers

Last update on August 19, 2026 // Source: Amazon API

Customers Also Liked

  • Vector Optics Rifle Scope 1 Vector Optics Marksman 4.5-18x50mm, 1/10 MIL, 30mm Tube, Second Focal Plane (SFP) Hunting Riflescope

    Vector Optics Marksman 4.5-18x50mm Second Focal Plane (SFP) 1/10 MIL Hunting Riflescope with MP Reticle, 30mm Tactical Mount Rings, Lens Covers and Honeycomb Sunshade

    Was $259.00 - check current price
    Shop Deal
  • Vector Optics Rifle Scope 1 Vector Optics Marksman 6-24x50mm, 1/10 MIL, 30mm Tube, First Focal Plane (FFP) Hunting Riflescope

    Vector Optics Marksman 6-24×50 mm First Focal Plane (FFP) 1/10 MIL Hunting Riflescope with VPA-MF Reticle, 30mm Tactical Mount Rings, Lens Covers and Honeycomb Sunshade

    Was $285.00 - check current price
    Shop Deal
  • Talley Rifle Scope Base 1 Talley Picatinny Base

    Talley Picatinny Base

    Was $48.79 - check current price
    Shop Deal
  • Vector Optics Rifle Scope 1 Vector Optics 3X, 4X, 5X Tactical Maginifier with Flip-to-Side Detach Quick Release QD Picatinny Mount and Flip-up Scope Lens Cover for Red Dot Reflex Sight (Matte Black) (3X) (3X)

    Vector Optics 3X, 4X, 5X Tactical Maginifier with Flip-to-Side Detach Quick Release QD Picatinny Mount and Flip-up Scope Lens Cover for Red Dot Reflex Sight (Matte Black) (3X) (3X)

    Was $95.00 - check current price
    Shop Deal

Our Links

Home
Terms of Service
Privacy Policy
Affiliate Link Policy
FTC Disclosure
Mission Statement
Media Kit
Marketplace
Contact Us

Shop Gear

Shop All
Airsoft Rifles
Airsoft Pistols
Airsoft BBs
Airsoft Goggles
Airsoft Masks
Tactical Vests
Tactical Pouches
Gun Cases

Product Disclaimer

We make great efforts to maintain reliable information on all airsoft and tactical products presented on High Speed BBs. However, the product information listed on highspeedbbs.com is provided without warranty. Users should always check the manufacturer's official website for warranties, user manuals, terms (if any), and product details. The airsoft product offers that appear on the website are from respective airsoft industry companies, suppliers, and stores from which High Speed BBs receives compensation. This compensation may impact how and where products appear on this site (including, for example, the order in which they appear). This site does not include all airsoft products or all available product offers.

Amazon Associate Disclosure

Amazon Disclosure: Highspeedbbs is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. FTC Disclosure: Some links may be affiliate links. We may get paid if you buy something or take an action after clicking one of these. You can learn more about this from our affiliate policy, terms of service, and privacy policy.

Brand Disclosure

Brand Disclosure: Product names, logos, brands, and other trademarks featured or referred to within our content and website are the intellectual property of their respective trademark holders. Any reference in this website to third party trademarks, brands, or logos is to identify the corresponding third party goods and/or services.

© 2026 HighSpeed BBs. All Rights Reserved