Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope Review

First Impressions of Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope

The world of rifle scopes can be a dizzying landscape, filled with high-end optics costing as much as a decent used car. Sometimes, though, you just need something reliable, functional, and affordable. That’s where the Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope comes in. This scope promises a solid performance without breaking the bank, offering variable magnification and adjustable parallax – features typically found on much pricier models.

I’ve been a gear specialist for over a decade, and I’ve seen firsthand how a good optic can make or break a hunt. My old .308 hunting rifle needed an upgrade, and I was tired of squinting at targets past 200 yards. The Monstrum Guardian caught my eye because of its magnification range and the promise of parallax adjustment, crucial for accurate long-range shots, all at a price point that seemed almost too good to be true.

Unboxing the Monstrum Guardian, I was immediately struck by its solid feel. It has a decent weight to it, suggesting a robust build. The matte black finish is clean and understated, and the turrets felt surprisingly tactile. Compared to a Bushnell Banner I had lying around, the Monstrum felt significantly more substantial, although not quite as refined as a Leupold VX-3i I use on another rifle.

I was considering a Vortex Crossfire II for this build, but the adjustable objective (AO) on the Monstrum Guardian was the deciding factor, offering the potential for sharper focus and range estimation at longer distances. My initial impression was a mix of excitement and cautious optimism. Could this budget-friendly scope deliver on its promises, or would it be another case of “you get what you pay for?” Only real-world testing would tell.

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Real-World Testing: Putting Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope to the Test

First Use Experience

My first outing with the Monstrum Guardian was at my local shooting range, a no-frills outdoor facility with distances out to 300 yards. I mounted it on my .308 using a set of Weaver rings and bore-sighted it. The initial sight-in process was straightforward, though the turret clicks felt a bit mushy compared to higher-end scopes I’ve used.

The 6-18x magnification range proved immediately useful. Starting at 100 yards, I gradually increased the distance, adjusting the parallax knob to bring the target into sharp focus. Even on a moderately bright day, the image clarity was acceptable, though not exceptional. In shadier conditions, the scope struggled a bit with light transmission, and the crosshair reticle became slightly harder to see against darker targets. I also noticed a bit of chromatic aberration (color fringing) at the highest magnification settings.

Initially, I had some trouble getting a consistent cheek weld due to the scope’s eye relief. After adjusting the scope position on the rail, the eye relief of 3.5-3.8 inches was adequate.

Extended Use & Reliability

After several months of use, including a couple of hunting trips and numerous range sessions, the Monstrum Guardian has held up reasonably well. There are a few minor scratches on the finish, but the scope has maintained its zero consistently, even after being bumped around in my truck.

The turrets, while still not the crispest, have become more predictable with use. Cleaning the lenses is simple, and the scope has proven to be reasonably fog-proof, although I haven’t subjected it to extreme weather conditions. Compared to the cheap scopes I used when I first started shooting, the Monstrum Guardian is a significant step up in terms of reliability and optical quality.

Breaking Down the Features of Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope

Specifications

The Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope boasts the following key specifications:

• Magnification: 6-18x. This variable magnification allows for versatile use from close-range to longer distances.
• Objective Lens Diameter: 50mm. The large objective lens gathers ample light for a brighter image, especially in low-light conditions.
• Tube Diameter: 1 inch. A common tube size allows for easy mounting with a wide variety of rings.
• Reticle: Crosshair. A simple crosshair reticle provides a clear aiming point.
• Reticle Focal Plane: Second Focal Plane (SFP). The reticle size remains constant throughout the magnification range, which is beneficial for hunting and target shooting.
• Parallax Adjustment: Adjustable Objective (AO). The adjustable objective lens allows for sharper focus and parallax correction at various distances.
• Eye Relief: 3.5-3.8 inches. Provides adequate space between the eye and the scope to prevent recoil-related injuries.
• Material: 6061 Aircraft Aluminum. Ensures durability and lightweight construction.
• Weight: 15 oz. Lightweight to not add much weight to your rifle.
• Illumination: Green, Red. The illuminated reticle allows for better visibility in low-light conditions.
• Water Resistance: Yes.
• Fogproof: Yes.

Performance & Functionality

The Monstrum Guardian performs adequately for its price point. Accuracy is decent, and the adjustable parallax is a valuable feature for dialing in precise shots at varying distances. However, the optical clarity is not on par with higher-end scopes, and there is noticeable chromatic aberration at higher magnifications.

The scope’s biggest strength is its versatility. The 6-18x magnification range makes it suitable for a variety of shooting applications, from hunting medium-sized game to target shooting at the range. Its weakness lies in its low-light performance.

Overall, the Monstrum Guardian meets expectations for a scope in its price range. It provides functional performance and features that are typically found on more expensive models.

Design & Ergonomics

The Monstrum Guardian features a straightforward and functional design. The build quality is solid, thanks to the use of 6061 aircraft aluminum, but the overall finish feels somewhat basic. The scope’s weight of 15 ounces is manageable, adding minimal weight to your rifle.

The scope is relatively user-friendly, though the mushy turret clicks and tight parallax adjustment knob can be frustrating at times. The illuminated reticle is a nice touch, but the brightness settings could be finer-tuned.

Durability & Maintenance

The Monstrum Guardian appears to be reasonably durable, withstanding moderate recoil and bumps without losing zero. The 6061 aircraft aluminum construction feels sturdy, and the matte black finish is resistant to scratches and abrasions.

Maintaining the scope is simple, requiring only occasional cleaning of the lenses with a microfiber cloth and lens cleaning solution.

Accessories and Customization Options

The Monstrum Guardian 6-18x50mm does not come with many accessories. Mounting rings are required.

The scope is compatible with any standard 1-inch scope rings, providing a wide range of mounting options. As a second focal plane scope the Monstrum Guardian does not have many parts that need replacing, but the end caps are a common part to customize.

Pros and Cons of Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope

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Who Should Buy Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope?

The Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope is perfect for: Budget-conscious hunters seeking an entry-level optic with adjustable parallax. Target shooters who want to experiment with longer ranges without investing in a high-end scope. Those who are new to rifle scopes and want to learn the basics without breaking the bank.

Who should skip this product? Serious long-range shooters who demand exceptional optical clarity and precise adjustments. Those who frequently hunt in low-light conditions and require superior light transmission.

Must-have accessories or modifications? A set of quality 1-inch scope rings is essential for mounting the scope.

Conclusion on Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope

The Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope is a solid entry-level optic that offers a decent performance for its affordable price. It’s not going to compete with high-end scopes in terms of optical clarity or precision, but it provides functional features and a versatile magnification range that make it a worthwhile option for budget-minded shooters.

The value proposition is justified, given the scope’s price point and features. While there are some drawbacks, such as the mushy turrets and less-than-stellar low-light performance, these are to be expected in this price range.

I would personally recommend the Monstrum Guardian to anyone looking for an affordable and functional scope for hunting or target shooting. If you’re willing to sacrifice some optical quality and refinement for a budget-friendly price, the Monstrum Guardian is definitely worth considering. Upgrade your shooting experience today, purchase the Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope!