A rifle scope doesn’t need much magnification power so its specification of 4-12x40 is already an overkill in terms of magnification. If you cannot understand what this means, it stands for variable magnification power between 4 to 12x with an exit objective lens of 40mm in diameter.
The exit lens is not too big nor too small and being paired with Nikon’s multi-coating formula, light is less likely to be reflected from the lens for a brighter and clearer image quality. Along with a total length of 19 inches and average weight of 2.2 pounds, it is highly-versatile and portable. You wouldn’t be able to feel any changes in the gun’s weight when the scope is mounted.
The reticle also maximizes the rifle’s capability with its BDC 600 opening circle aiming points. What’s great about this is that the open circle changes accordingly depending on the distance of the target and will be functional as long as the target is within the range between 100 and 600 yards.
Additionally, it has a ¼ MOA accompanied by easy to adjust spring-loaded turrets. They are also instant zero reset turrets for fast adjustments especially if your target is on the run.
If you compare this with its other version still having the name Ninkon P-223 3-9x40, you can see that there is not much difference other than the magnification power. Since it has a maximum magnification power of only 9x, it no longer needs the parallax adjustment compared to the 4-12x40. All in all, this comes at a price of .

This rifle scope is anodize-finished, made of high-durability aluminium alloy and sealed to protect the inside from harmful elements. Its first focal plane reticlegives outstanding low light performance and accurate hold overs out to 500 yards. It has a great price and ranks no. 10 in Sports and Outdoors Best Sellers rank. It features target turrets for pinpoint precise adjustments specifically, .1Mil click value.
Bushnell AR Optics FFP Illuminated BTR-1 BDC Reticle is also built with highly sought features that include tactical turrets for quicker target adjustment, a black finish for easy concealment, and a waterproof/fogproof/shockproof body that ensures longest working capabilities.

Moreover, this riflescope provides illuminated red and green T-dot reticle for better target lock-in and accuracy in shooting even at different hunting environment. Another added feature is the scope's Amber-Bright lens coating, which easily tells apart targets such as a brown tree and a brown critter – allowing this scope to be most effective an useful during autumn days.
With these new and highly innovative features, the Bushnell AR Optics FFP Illuminated BTR-1 BDC Reticle AR-223 Riflescope is considered by majority of hunters to be the most effective and ideal scope to use during autumn deer woods hunt. Lastly, with its multi-coated optics for adjustable brightness even at low-light hunting conditions, you will surely experience a more enjoyable at accurate hunting results that will satisfy your purchase.

Ranked no. 15 in Sports and Outdoors Best Sellers rank, this scope mostly 5-star reviews. It is optimized with .223 REM/5.56 NATO round with 55-grain polymer tip bullet. From dawn to dusk, it offers maximum brightness because of a fully multi-coated optical system with up to 98% light transmission. It provides a guide to help you magnify your targets and widen your vision as you follow and carefully wait for the perfect timing to shoot.
​Provides a vey precise, ¼ MOA hand-turn tactical-style, zero-reset turrets. It has positive click reticle adjustments which get you zeroed in quicker and maintain your setting.
Moreover, BDC Carbine Reticle is equipped with a new BDC Carbine reticle which gives a 200 yard crosshair and can also work efficiently up to 400 yards to 600 yards.
Furthermore, its innovative Fully Multicoated Optical System gives the best light transmission that can reach up to 98%. Lastly, the Zero-Reset Turrets-Positive click feature allows you to zero-in on any target in a much quicker time while enabling you to maintain your desired setting even with several recoils.Nikon P-223 3x32 Matte BDC Carbine is built to last for a long time because it is waterproof, fogproof and has a Nitrogen filled O-ring.

​This rifle scope is ranked no. 4 in Sports and Outdoors Best Sellers rank. It has mostly 5-star reviews and fully multi-coated optics with up to 98% light transmission. As its specs, it is repeatable, precise and has a hand-turn ¼ inch at 50 yards reticle adjustments with quick zero rest turrets. This product is guaranteed Nitrogen sealed and O-ring sealed.
Aside from a worthy price, this riflescope offers an efficient hunting performance due to its innovative optical system which provides maximum lighting system that can reach up to 98 percent. The result is that you will have maximum brightness at any hunting environment.
Furthermore, its BDC reticle allows you to get a steady target hold even at long ranges for the most accurate shot. With its unique see-through ballistic circles, you are assured ofa more accurate shooting for both short and long-range hunt.
Nikon ProStaffRimfire 3-9 x 40 Black Matte comes with a 3.6 inches eye relief that ensures you will no longer experience severe shooting angles. Another added feature is its waterproof and fogproof capabilities that is perfect for any conditions be it a rainy or sunny hunting terrain.Lastly, this wonderful product comes with a lifetime warranty.

This is still one of those low magnification rifle scopes good for close quarter combat but with a little bit added specification. Rather than having only 1x, this one is equipped with 2x magnification with an objective lens size of 30mm in diameter. The 2x magnification isn’t much different from the 1x but could at least identify more minor details along with a wide field of view.
The equipped reticle can change color from red or green,as opposed to its twin the SF-BR-AR15 which only has the choice of the bright red color, and it is capable of changing light intensities for easy contrast in most situations. Being multi-coated rather than amber colored, it allows more light to be seen for brighter images.It is also a 4 MOA diameter reticle with ½ MOA adjustments. In terms of wind and elevation adjustments, it has a maximum of 100 MOA.
You also don’t have to worry about parallax adjustments since it is parallax free at most of 50 yards. Just like all other scopes in this low magnification category, it is fog and water proof for uninterrupted performance plus it comes with covers to protect both the objective and main lens of the scope.

If you are not into hunting or in need of any form of magnification then this scope is worth a try. It is plainly simple and nothing much to offer with its fixed power of only 1x and has an objective lens of 32mm.
It has a 3 MOA T-dot reticle that can be colored green or red depending on your preferences.

The reticle is easy to see especially that it has an amber colored lens to be able to see in dark places during operations. There is also Zoom dot option that allows you to adjust your standard reticle between 1 MOA to 10 MOA to increase field of view but with the standard 3 MOA, you have a field of view of 44 feet at 100 yards.
This scope concentrated more on its rugged functionality since it is made for fast paced multi-event operations so it is all-around hard from water, fog and shock proof. Also, at an average length of 6.75 inches and weight of 15.6 inches, it is nearly unobservable on your rifle scope.
Though this scope is highly comparable to the TRS-25 with 1x25mm specification. The only problem with this one is that it has a smaller objective lens that limits the field of view and the inclined lens is purposed to make the reticle more accurate while also decreasing the total length of the scope. The disadvantage is that the reticle lighting must be regularly adjusted depending on the situation which makes this the loser of the two scopes.