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 / Gamo 3-9X40 AO W/ RINGS 6212039X40AOCP Optics
Gamo Rifle Scope 1 Gamo 3-9X40 AO W/ RINGS 6212039X40AOCP Optics

Gamo 3-9X40 AO W/ RINGS 6212039X40AOCP Optics

Was $74.19 - check current price

Check Out Gamo 3-9X40 AO W/ RINGS 6212039X40AOCP Optics. See Great Rifle Scopes By Gamo.

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: d7f690be43ca Category: Rifle Scopes Tag: rifle scope
  • Description
  • Additional information

Description

Rifle Scope Product Details

Gamo 3-9X40 AO W/ RINGS 6212039X40AOCP Optics
This new Gamo scope has everything a Hunter could wish for. Fully multi coated optics that make targets appear bright and sharp. Clean design with a non-reflective black matte finish. Fast focus Ocular system and a generous eye relief that will make it easy to get on target faster. This Gamo scope also features the RGB illuminated center dot. A technology which allows multiple brightness and size settings of a floating Red, green or Blue dot for precision shot placement in any lighting condition.

Rifle Scope Product Features

3-9X magnification
Objective lens diameter: 40mm
Fully coated lens
Twilight factor: 10.95 – 18.97
Tube diameter 1 inch
3-9X Magnification; Objective Lens Diameter: 40mm; Fully Coated Lens
Exit Pupil Range: 13.3-4.4mm Eye Relief: 3.5in. Field of View @ 100 yards: 40-13ft; Diopter Compensation 2/-2 dpt; Twilight Factor 10.95 -18.97;

About the Gamo Company

Gamo is a premium supplier for weapon scopes, optics, mounting solutions, and other add-ons used for firearms like rifles and long guns. They innovate and manufacture their products choosing elements which are resilient and long lasting. This includes the Gamo 3-9X40 AO W/ RINGS 6212039X40AOCP Optics by Gamo. For additional shooting items, visit their site.

Info Rifle Glass

Rifle scopes allow you to exactly align a rifle at various targets by aligning your eye with the target over a range. They do this through zoom by using a series of lenses inside the scope. The scope’s positioning can be dialed in to take into account varied environmental elements like wind speed and elevation to make up for bullet drop.

The scope’s purpose is to understand exactly where the bullet will land based upon the sight picture you are viewing with the optic as you align the scope’s crosshair or reticle with the intended point of impact. Most modern rifle optics have about eleven parts which are found internally and outside of the scope body. These scope parts include the rifle scope’s body, lenses, windage and elevation turrets or dials, focus rings, and other components. Learn about the eleven parts of rifle glass.

Rifle Scope Types

Rifle scopes can be either “first focal plane” or “second focal plane” style of scopes. The kind of focal plane a scope has determines where the reticle or crosshair lies in regard to the scopes zoom. It simply implies the reticle is located behind or ahead of the magnification lens of the optic. Picking the most beneficial type of rifle glass is dependent on what sort of shooting you plan on undertaking.

Info About First Focal Plane Glass

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

  • Quick acquisition, far away kinds of shooting
  • Shooting situations where computations are marginal
  • Experienced shooters who recognize their aim point “hold over” as well as “lead” ratios for their rifles
  • Shooters who don’t mind the reticle is bigger and requires more visual eyesight room than a SFP reticle

About Second Focal Plane Glass

Second focal plane scopes (SFP) feature the reticle to the rear of the magnification lens. This induces the reticle to stay at the very same overall size relative to the level of zoom being used. The outcome is that the reticle dimensions shift based upon the magnification applied to shoot over greater distances considering that the markings present different increments which change with the zoom level. In the FFP illustration with the SFP glass, the 5x “zoom” one hundred yard tick would be 1/5th of the non “zoom” tick measurement. These types of glass are useful for:

  • Long distance forms of shooting where shooters have extra time to make ballistic computations
  • Shooting where most of the shots occur within shorter ranges and spaces
  • Shooters who would like a clearer optic sight picture with less area taken up by the larger sized FFP reticle

Details on Rifle Optic Zoom

The extent of scope zoom you require depends upon the sort of shooting you like to do. Pretty much every style of rifle glass provides some level of zoom. The quantity of zoom a scope supplies is identified by the diameter, density, and curves of the lens glass within the rifle scope. The magnifying level of the optic is the “power” of the scope. This indicates what the shooter is checking out through the scope is magnified times the power element of what can typically be seen by human eyes.

About Fixed Single Power Lens Optics

A single power rifle scope uses a zoom number designator like 4×32. This means the zoom power of the scope is 4x power while the objective lens is 32mm. The zoom of this kind of scope can not fluctuate given that it is a fixed power scope.

Variable Power Lens Rifle Optic Info

Variable power rifle scopes have adjustable power. It will note the zoom level in a format like 2-10×32. These numbers mean the magnification of the scope can be set between 2x and 10x power. This additionally incorporates the powers in-between 2 and 10. The power shift is accomplished by making use of the power ring part of the scope near the rear of the scope by the eye bell.

Power Levels and Range

Here are some advised scope powers and the ranges where they could be effectively used. High power glass will not be as beneficial as lower magnification glass since too much zoom can be a negative aspect depending on your shooting distance. The same concept goes for longer distances where the shooter needs enough power to see where to best aim the rifle.

Lens Covering for Optics

All top of the line rifle scope lenses are layered. Lens coating can be a crucial aspect of a rifle’s setup when looking at high end rifle optics and scope equipment.

Details on Rifle Glass Lens Coatings – HD Versus ED

Some scope manufacturers likewise use “HD” or high-definition lens coatings which use various processes, chemicals, polarizations, and aspects to draw out different colors and viewable definition through the lens. Some scope makers use “HD” to refer to “ED” indicating extra-low dispersion glass.

Single Covering Versus Multi-Coating

Various scope lenses can even have different coverings applied to them. All lenses typically have at least some type of treatment or coating applied to them before being used in a rifle scope or optic assembly. Because the lens isn’t just a raw piece of glass, they require performance enhancing coatings. It is part of the finely tuned optic. It must have a covering placed on it so that it will be optimally usable in lots of kinds of environments, degrees of sunlight (full VS shaded), and other shooting conditions.

This lens treatment can offer protection to the lens from scratches while minimizing glare and other less beneficial things experienced in the shooting environment while sighting in with the scope. The quality of a single coated lens depends on the scope manufacturer and how much you paid for it.

Some scope manufacturers similarly make it a point to define if their optic lenses are covered or “multi” coated. Being “better” depends on the manufacturer’s lens treatment technology and the quality of products used in developing the rifle scope.

Rifle Scope Lens Anti-water Finish

Water on a lens does not assist with keeping a clear sight picture through a scope at all. Many top of the line and high-end scope makers will coat their lenses with a hydrophilic or hydrophobic coating which is water repellent.

Rifle Optic Installation Alternatives

Mounting options for scopes can be found in a couple of options. There are the basic scope rings which are individually installed to the scope and one-piece mounts which cradle the scope. These various kinds of mounts also typically come in quick release versions which use throw levers which allow rifle operators to quickly install and dismount the scope.

Optic Mounts with Hex Key Rings

Basic, clamp-on design mounting scope rings use hex head screws to install to the flattop style Picatinny scope mounting rails on rifles. These styles of scope mounts use double independent rings to support the scope, and are usually constructed from 7075 T6 billet aluminum which are developed for far away precision shooting. This type of scope mount is effective for rifle systems which need to have a resilient, unfailing mount which will not move despite how much the scope is moved or jarring the rifle takes. These are the type of mounts you really want to have for a dedicated optics system on a reach out and touch someone hunting or interdiction firearm that will hardly ever need to be modified or recalibrated. Blue 242 Loctite threadlocker can additionally be used on the scope mount screws to stop the hex screws from backing out after they are installed firmly in position. An example of these rings are the 30mm style from Vortex Optics. The set typically costs around $200 USD

Quick-Release Cantilever Optic Ring Mounting Solutions

These types of quick-release rifle scope mounts can be used to quickly connect and take off a scope from a rifle. If they all use a comparable design mount, a number of scopes can also be swapped in the field. The quick detach design is CNC crafted from anodized 6061 T6 aluminum and the mounting levers connect tightly to a flat top style Picatinny rail. This lets the scope to be sighted in while on the rifle, taken off of the rifle, and remounted back on the rifle while preserving the original sighting settings. These types of mounts are useful and convenient for rifles which are transferred between vehicles a lot, to remove the scope from the rifle for protection, or for sight systems which are used in between multiple rifles. An example of this mount style is the 30mm mount designed by Vortex Optics. It generally costs around $250 USD

Rifle Optic Tube Sealing and Gas Purging

Wetness inside your rifle scope can spoil a day on the range and your highly-priced optic by causing fogging and generating residue inside of the scope’s tube. The majority of optics prevent wetness from entering the scope tube with a system of sealing O-rings which are water resistant. Typically, these water resistant scopes can be submerged within 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be ample moisture prevention for basic use rifles, unless you intend on taking your rifle boating and are concerned about the optic still performing if it goes over the side and you can still rescue the firearm.

Rifle Optic Gas Purging

Another part of avoiding the buildup of moisture within the rifle scope tube is filling the tube with a gas like nitrogen. Given that this space is already taken up by the gas, the scope is less altered by temperature shifts and pressure differences from the outdoor environment which could possibly permit water vapor to leak 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

Gamo

ASIN

B007VSXH36

Reviews

Over 42

Reviews Rating

3.8 out of 5 stars

Prime

Amazon Prime

Shipping

FREE Shipping by Amazon

Best Sellers

Last update on August 18, 2026 // Source: Amazon API

Customers Also Liked

  • Vector Optics Rifle Scope 1 Vector Optics Counterpunch 6-25X 56 First Focal Plane Rifle Scope with Illumination

    Vector Optics Counterpunch 6-25X 56 First Focal Plane Rifle Scope with Illumination

    Was $250.00 - check current price
    Shop Deal
  • Vector Optics Rifle Scope 1 Vector Optics Sagittarius 10-40X 56 First Focal Plane Rifle Scope with Illumination

    Vector Optics Sagittarius 10-40X 56 First Focal Plane Rifle Scope with Illumination

    Was $250.00 - check current price
    Shop Deal
  • Vector Optics Rifle Scope 1 Vector Optics Veyron 4-16x44mm, 1/10 MIL, 30cm Tube, First Focal Plane (FFP) Ultra Short Riflescope

    Vector Optics Veyron 4-16x44mm, 1/10 MIL, 30cm Tube, First Focal Plane (FFP) Ultra Short Riflescope

    Was $259.00 - 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