Fn PS90 Review: Rare and worth it?

In this FN PS90 review we’ll be covering this unique bull-pup rifle, what we think about is features, and its specifications. We’ll also cover the pros and cons of the PS90 to determine whether it’s the right choice for you.

I initially reviewed the FN PS90 in 2022, but after spending more time with it and firing a few hundred rounds, my opinions have slightly changed. Let’s delve into this updated review and explore what’s new.

FN PS90 Background

As a former special operations member, I’ve seen the FN PS90 in action and can attest to its unique profile. The FN PS90 is the civilian version of the iconic P90 military-grade firearm. It is perhaps one of the more recognizable firearms but also unknown. What I mean is this – it’s unique profile makes it easy to spot, however, many people only recognize it as “that rifle” and don’t really know what it is other than a favorite choice in sci-fi movies.

The first thing you need to know about the FN PS90 is it is a bullpup rifle. This is the popular, compact form of rifle which has found favor among certain parts of the firearms community.

However, bullpup rifles aren’t universally loved, and their compact construction has led to performance problems with certain bullpup rifles and shotguns. So have FN managed to learn from the mistakes of others with the PS90, or does it have problems of its own?

If you’re thinking of making the PS90 from FN your next bullpup rifle, you’re going to want to check out the full Gun University take on the PS90. We’ve found a few facts you’ll absolutely want to be aware of before you go any further.

Let’s get to it!

FN PS90 Features Review

1 MIL-SPEC Barrel with Integrated Muzzle Brake

High quality, durable barrel

2 Moulded In Sling Attachment Point

Allows for easy sling attachment to keep your PS90 stable.

3 10 or 30 Round Detachable Polymer Magazine

Your choice of high-quality mags.

FN PS90 – Our Take

The FN PS90 is the most innovative bullpup we’ve reviewed.

Seriously, just look at it! It looks way ahead of its time.

It feeds a tiny cartridge that sits perpendicular to the barrel in a magazine ABOVE the action of the gun!?!?! It has two ergonomic holes for grips?!?!

If you’d like to see how it stacks up against other bullpup rifles, check out our Best Bullpup Guide.

What we loved: Tiny package bullpup “rifle.” We used rifle in quotes because although it is legally a rifle, it is on the small end when it comes to power. There are handguns that shoot this same cartridge. It’s fast and it easily penetrates body armor but it doesn’t have much power behind it (and nearly every other rifle round penetrates armor just as well or better).

The trigger guard! It was really practical. It’s large enough to easily fit gloved hands, which is great for tactical or cold weather situations. Its ergonomic shape allows easy access to the trigger while also providing some protection against accidental discharges. Overall, I think the trigger guard’s design fits well with the PS90’s compact and ergonomic build.

The FN PS90 comes with a MIL-SPEC barrel that includes an integrated muzzle brake, which also works as a flash hider. This feature helps cut down the visible flash when firing, which is great for low-light situations or preserving my night vision. The integrated design not only looks sleek and futuristic but also fits perfectly with the PS90’s compact and efficient bullpup configuration.

What we didn’t like: The manual of arms for this rifle is too awkward for us. Sure, if you switch to a bullpup rifle from a standard rifle, you’re going to have to get used to manipulating the firearm a little differently. However, this just takes it to a new level… it’s cool, but weird.

The trigger on the FN PS90 feelst pretty average. It had a heavy and long pull, which can make precise shooting a bit challenging. The reset isn’t as crisp as I’d like, but for its role as a personal defense weapon, it gets the job done.

Here’s the harsh truth, aside from its “cool factor,” and few other features, this gun doesn’t really hold up against its competition… it’s not “better” that anything else in any single category.

In fact, it is so unique that it is hard to recommend it. Unfortunately, it ends up being a bit of a novelty firearm.

Unless you’ve got to have one because you like it in a video game, you might want to stay away from the FN PS90.

FN PS90 Pros and Cons

FN PS90 – FAQs

Does the FN PS90 use direct blowback operation?

Yes, the FN PS90 operates on a direct blowback system. This means that the force generated by firing a round directly pushes the bolt back to eject the spent cartridge and load a new one.

How does the FN PS90 perform in the civilian and commercial firearms markets?

The FN PS90 is recognized for its unique design and compact bullpup configuration, making it a distinctive choice in both commercial market and civilian market. It appeals to firearm enthusiasts, collectors, and those seeking a novel and futuristic firearm option.

Does the FN PS90 use round magazines?

Yes, the FN PS90 typically uses 10 or 30 round detachable polymer magazines. These magazines are designed to accommodate the 5.7x28mm ammunition that the rifle fires.

Does the FN PS90 have interchangeable trigger packs?

No, the FN PS90 does not have easily interchangeable trigger packs like some other firearms. Its trigger assembly is integral to the firearm’s design and is not intended to be swapped out by the user as a modular component.

FN PS90 Ammo

FN PS90 Starter Pack

If you’ve decided to pick up the FN PS90, or found another firearm that suits your needs, there are some bare essentials you’re going to need to pick up in order to maximize its potential and your safety regardless of if it’s your first firearm or not.

• Gun Cleaning Kit: Otis All Caliber Elite Range Box on Amazon or build your own personalized cleaning kit with premium components.
• Shooting Glasses: All it takes is one piece of rogue hot brass, and you’ll learn the importance of shooting glasses. But not all glasses are built the same. See our recommendations for the Best Shooting Glasses.
• Hearing Protection: Firing a gun without wearing proper ear pro can be very dangerous and detrimental to your hearing. Find out the best hearing protection for you in our full length review.
• Storage: Check our our article on the Best Biometric Gun Safes
• Targets – If you’re wanting a great resource for shooting practice or zeroing your optics on your optics rifle or pistol, download our FREE Sighting in Targets below.
• Magazines – FN PS90 Mags at Brownells

Upgrades and Accessories

FN PS90 Accessories

1. Trijicon Mro 2.0 MOA Adjustable Green Dot		8 reticle brightness levels Low-distortion multi-coated optics Nitrogen-filled	Check Amazon
2. Viking Tactics VTAC Padded Sling		Adaptable and Comfortable Wide Shoulder Strap	Check Amazon
3. Decibullz Custom Molded Earplugs		Great In-Ear option Custom molded – super easy and comfortable NRR: 31	Check Amazon

Other Bullpup Rifles of its Class to Check Out

When it comes to bullpup rifles, there are much better options out there. Sure… the FN PS90 looks cool. And it’s probably on your favorite video game. But we just don’t think it’s really worth the value. Here’s two different alternatives:

Apart from the need to have specialized magazines and parts, the Steyr Aug still remains as a top choice for anyone looking to purchase a bullpup rifle. Why? Because it just looks cool! Seriously, lots of bad guys in movies uses this gun. On top of that, it’s just a very reliable choice for a bullpup. Price would be the only downside but worth it if you can afford it…READ MORE

This is our favorite bullpup rifle we’ve gotten our hands on. It shoots reliable and accurate.Also, it fires common ammo with easy to find mags–unlike the PS90, As a matter of fact, the thing we liked the least is its price. But… you do get what you pay for…READ MORE 

How to Care for Your FN PS90

While the FN PS90 does have its fair share of shortcomings, it’s actually relatively simple to breakdown and clean. Check out this sweet video on how to properly field strip your PS90.

• GUN CLEANING KIT: Gloryfire Universal Cleaning Kit on Amazon

Important Links And Manuals For Your FN P90

Looking to gain a bit more insight into the FN PS90 before you buy? You might want to check out our list of suggested reading.

• FN PS90
• FN PS90 Manual
• Is the PDW Still Relevant?