Description
FN PS90 SBR: The Compact Bullpup for Arizona Shooters
When FN Herstal designed the PS90, they created something different from the typical AR platform. This isn’t just another short-barreled rifle – it’s a completely reimagined firearm that puts the action behind the trigger group in a true bullpup configuration. The result is a 19-inch rifle that handles like something much shorter, making it ideal for the varied terrain and shooting situations Arizona offers.
What Makes This SBR Stand Out
Most SBRs on the market are variations of the AR-15 platform. The FN PS90 SBR takes a different approach entirely. The 10.4-inch barrel combined with the bullpup design gives you a full-length sight radius in a package that’s barely longer than some pistols. The closed bolt semi-auto action runs cleaner than many direct impingement systems, and the 5.7×28 cartridge offers minimal recoil with impressive terminal ballistics. This isn’t just a chopped-down rifle – it’s a purpose-built compact firearm that maintains all the ergonomics and handling characteristics of its full-sized counterpart.
Specifications
- Manufacturer: FN Herstal
- Caliber: 5.7×28
- Action: Semi-Auto, Closed Bolt
- Barrel Length: 10.4 inches
- Overall Length: 19 inches
- Weight: 6 pounds 4 ounces
- Thread Pitch: 1/2×28
- MSRP: $2495
Arizona-Ready Performance
Here in Tucson, we understand what Arizona shooters need. The PS90 SBR’s compact size makes it perfect for vehicle storage during ranch patrols or fitting in ATV compartments when heading out to remote shooting spots. The 5.7×28 caliber offers excellent performance against varmints and predators while keeping weight and recoil manageable for all-day shooting sessions. Whether you’re dealing with javelina on your property or just want a versatile home defense option that won’t take up your entire safe, this FN delivers. At tucsonarms, we’ve seen how well this platform handles our desert environment – the polymer construction resists heat and moisture, and the simple design means fewer parts to collect dust and grit.
Similar SBR Options
If you’re considering the PS90 SBR, you might also want to check out our Honey Badger by Q in 5.56 for another compact 5.56 option, or the B&T TP9 SBR for a different take on the compact PDW concept. For those interested in larger calibers, our Q Fix SBR in 8.6 Blackout offers serious stopping power in a manageable package.
Built for Practical Use
The PS90 wasn’t designed for competition or collectors – it was built for real-world use. The ambidextrous controls work equally well for left and right-handed shooters, the integrated optics rail accepts most modern red dots and scopes, and the 50-round translucent magazines give you plenty of capacity without excessive bulk. The 1/2×28 thread pitch means you can easily add muzzle devices or suppressors, though you’ll need to file the appropriate paperwork first. This is a working firearm that happens to be compact, not a compact firearm trying to do a full-sized rifle’s job.
NFA-Regulated Firearm — ATF Form 4 Required
This is a short-barreled rifle (SBR) regulated under the National Firearms Act. Purchase requires an ATF Form 4 transfer, a $200 federal tax stamp, and approximately 30–120 days of ATF processing (eForm 4 is typically faster than paper). The firearm ships to a licensed FFL/SOT dealer of your choice; you take possession only after ATF approval.
SBRs are currently legal to own in most U.S. states. They remain prohibited or restricted for civilian possession in California, New York, New Jersey, Washington D.C., Hawaii, Iowa, Rhode Island, and Washington State. Check your state and local law before ordering. By placing an order you affirm that possession is lawful in your jurisdiction and that you are 21+ with no prohibiting factors under 18 U.S.C. §922(g).
Questions about Form 4, trust setup, or SOT transfer? Contact us before you order — we’ll walk you through it.
Frequently Asked Questions
What's the NFA process for buying this SBR?
You'll need to file a Form 4 with the ATF, which requires fingerprints, passport photos, and approval from your local chief law enforcement officer. We handle the paperwork submission and coordinate with your chosen FFL for the transfer once approved.
How long does the approval process take?
Current ATF processing times for Form 4s average 6-9 months for individual applications. Trust applications may process slightly faster. We provide status updates throughout the waiting period.
Do you ship to Arizona FFLs?
Yes, we ship to all licensed Arizona FFL dealers. You choose the receiving dealer during checkout, and we handle all shipping logistics and documentation for a smooth transfer process.
What's the practical use for 5.7×28 caliber?
The 5.7×28 offers low recoil with good penetration and terminal performance. It's effective for varmint control, home defense, and recreational shooting while being easier on the shooter than larger rifle calibers.
Mike R. (verified owner) –
Bought this for ranch patrol. The compact size is perfect for truck mounting, and the 5.7 handles coyotes without tearing up pelts. FN quality throughout – worth every penny.
Sarah K. (verified owner) –
Love how this handles compared to my AR SBRs. The bullpup design takes getting used to, but once you adapt, it’s incredibly fast and balanced. Perfect for our desert shooting trips.
Carlos M. (verified owner) –
This SBR stays in my bug-out vehicle year-round. The polymer construction handles heat and dust better than my metal firearms. Reliable through thousands of rounds with minimal cleaning.