Monstrum Tactical S330P Review

Monstrum S330P 3X Prism Scope

Monstrum S330P 3X Prism Scope

The Monstrum Tactical 330P is budget-friendly prism scope with an etched black reticle that is constant in all lights but can be illuminated for low light or night vision requirements.

This is a 3x scope with a 30mm objective lens and is extremely compact but retains heavy-duty performance due to the chassis design.

Monstrum S330P 3X Prism Scope

Before I go into the review, here are some features that I liked when trying out the 330P; it has multiple levels of brightness to select from, which is always required for the different ambient light conditions.

The MOA clicks are 0.5 each, so you get some fine-tuning, and the black reticle, which as I mentioned above is etched into the optics is supported by either red or green crosshairs.

The reticle is visible during daylight hours, but when the light levels drop, I just switch on the illumination for a better view.

Overall dimensions of the 330P include its 3.0 to 3.5 eye relief, the body is 5” long, and the whole shebang weighs in at 15 ounces. This is an easy to mount scope which is accurate for up to 500 yards. The optics are coated with anti-reflective and are treated for fog resistance.

Monstrum S330P 3X Prism Scope

The Monstrum Tactical 330P is a heavy compact scope best used for training rookie shooters to have as a spare due to its inexpensive cost.

On-Site Review

I received the scope in a box, and it was nicely sealed in a plastic vacupac. So, I took this scope out of its box and decided to skip the instruction leaflet, after all, if a scope is good it’s going to be intuitive.

That’s my first test. I look at the scope, and I see thick strong mount screws, these screws seem to be designed for heavy-duty work, and I expect are designed to handle a lot of batters.

However, with this stated, I found that I needed to tighten the base knobs to assure a constant grip when putting the scope through the field.

My scope came with lens caps, so no issues with that. Just take heed that you don’t get batteries when you buy this, so make sure you have them ready.

Monstrum S330P 3X Prism Scope

The elevation and windage knobs are located as expected with the elevation knob on the top and the windage knob on the right side of the body. These knobs are big and bulky, making it easy to rotate them with gloves.

They rotate smoothly, but…and yes this is a big but, they rotate opposite to what you expect. In other words, when left is up, in this case, its down and so on.

So if you do decide to adjust your elevation and windage, remember this is like driving in the UK, its opposite to what you are used to.

Now with this in mind, I set my scope, and inserted my mag into the AR-15 and let off three single shots to zero in. Guess what, it zeroes in perfectly.

The scope delivers a clean and concise picture, it is rigid on the mount, and it does not shake, wobble or change when reacting to vibration, recoil or other minor impacts.

However, this scope is not designed to withstand extreme recoil as in shotgun recoil, so don’t use it with a shotgun.

Monstrum S330P 3X Prism Scope

When it comes to illumination, the batteries perform well and provide enough battery hours for performance. This system does not employ a shake awake or MOTAC, it’s a straight forward manual adjustment system, which is perfect for the price you pay.


OK, so this is a compact device, it’s a small optic designed to deliver a simple 3x scoping experience. It is accurate and works well with an AR-15. It does need the occasional mount tightened, and it does work well in most weather conditions.

However, this is not a combat scope, it is not designed to take the rough and tumble of combat type environments. This is a hunting and range scope. It’s a great scope for hunting varmints, you get good target acquisition, and the reticle is simple for that spot-on shot.

The backwards knobs take some time to get used to, but once you remember that left is right and up is down you are in for a great experience.

Monstrum S330P 3X Prism Scope

The etched reticle is perfect for all-round performance, and even when dragged through muddy waters as well as in the rain, the scope maintains a clear view of the target.

The body might be small, but it is solid, and the weight is partially due to the extra thick mount and chassis required to secure the prisms and optics.


For a 5” 15-ounce aluminium scope, it delivers beyond the budget expectations, so if you want a spare training scope this is the one to get. The prism quality is good, the reticle is nice and clear, and the overall optic experience is great.

What really stands out in relation to price is the way it looks and performs. It looks like a more expensive model, and it performs admirably well, so the bottom line is that this is one inexpensive scope to have around as a spare or a trainer for rookie shooters.

After they have been broken in on the Monstrum Tactical 330P they can then move up to the big league scopes.

Monstrum S330P 3X Prism Scope

To sum up: The Monstrum 330P is the best budget-friendly beginners scope.

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