FN PS90 5.7x28mm 16.04″ 50rd FDE
$1,902.88
Get the FN PS90 5.7x28mm 16.04″ 50rd FDE—a bullpup semi-auto with a cold hammer-forged barrel, 50-round magazine, and ambidextrous controls. Reliable closed-bolt blowback action in a compact package.
The FN PS90 5.7x28mm 16.04″ 50rd FDE is a semi-auto bullpup that brings the PDW platform to a legal configuration without gutting the ballistic envelope. Chambered in 5.7x28mm, this closed-bolt, blowback-operated rifle uses a cold hammer-forged MIL-SPEC barrel and an integrated ported muzzle brake to manage impulse. The thumbhole stock keeps the overall length short while the translucent 50-round magazine feeds from above. This is the same FN factory build that long-range shooters and PDW enthusiasts have relied on for consistent function across a 16-inch barrel.
| Manufacturer | FN Herstal (per manufacturer specs) |
|---|---|
| Model | PS90 |
| Material | Cold hammer-forged MIL-SPEC steel barrel, synthetic polymer stock |
| Compatibility | 5.7x28mm ammunition, standard PS90 magazines |
| Finish | Flat Dark Earth (FDE) polymer stock, black metal components |
| Weight | Approx. 6.4 lbs (unloaded, per FN specs) |
| Condition | New |
Key Features
- Cold Hammer-Forged MIL-SPEC Barrel: The 16.04-inch barrel is hammer-forged to MIL-SPEC standards, giving you consistent rifling life and repeatable accuracy over thousands of rounds.
- Integrated Ported Muzzle Brake: Built into the barrel, the brake reduces felt recoil and muzzle rise, keeping your sight picture on target for faster follow-up shots at distance.
- Ambidextrous Controls: The charging handle and safety selector are placed for true left- or right-hand operation—no adapter plates or aftermarket parts needed.
- Translucent 50-Round Magazine: The top-mounted, translucent polymer magazine lets you see your round count at a glance, with a 50-round capacity that feeds reliably through the bullpup action.
- Bullpup Configuration: The thumbhole stock keeps the overall length at just over 26 inches while accommodating a full-length barrel, so you get rifle velocity without the rifle footprint.
Who It’s For
This rifle is for the precision shooter who wants a compact PDW that still holds 1-2 MOA at 50-100 yards with quality 5.7x28mm ammunition. It’s also for the collector or competitor who values the FN build quality and the unique bullpup ergonomics. If you’re looking for a reliable semi-auto that runs clean with minimal maintenance, this is your platform.
Pros & Cons
- Pro: Low recoil impulse and flat trajectory—5.7x28mm is a laser out to 150 yards.
- Pro: Factory-built ambidextrous controls mean no modification needed for left-handed shooters.
- Con: The trigger pull is heavier than a match-grade AR trigger—typically around 8 lbs—which can limit precision at longer ranges without aftermarket work.
Comparison: FN PS90 vs. Competitors
| Feature | FN PS90 (This Model) | Geissele Super Duty 5.56 | Zev Technologies OZ9 9mm |
|---|---|---|---|
| Caliber | 5.7x28mm | 5.56 NATO | 9mm |
| Barrel Length | 16.04″ | 16″ | 4.5″ (pistol) |
| Magazine Capacity | 50 rounds (standard) | 30 rounds | 17 rounds |
| Operating System | Closed-bolt blowback | Direct impingement | Striker-fired |
| Weight (unloaded) | ~6.4 lbs | ~6.9 lbs | ~1.8 lbs |
| Price | $1,699 | ~$2,100 | ~$1,800 |
FAQ
Is the FN PS90 reliable with factory ammunition?
Yes. Per FN specs, the PS90 is designed to function with standard-pressure 5.7x28mm ammunition from brands like FN, Federal, and American Eagle. The closed-bolt blowback system runs clean and feeds from the top-mounted magazine without the rim-lock issues seen in some aftermarket conversions.
What is the effective range of this rifle?
With the 16.04-inch barrel, you can expect reliable accuracy to 150-200 yards. The 5.7x28mm round has a flat trajectory, but for precision work, stay inside 100 yards to maintain sub-2 MOA groups.
Can I mount an optic on the PS90?
Yes. The receiver includes an integrated Picatinny rail (MIL-STD-1913) for mounting optics. Many shooters use a red dot or low-power variable optic (LPVO) for close-to-mid range use.
Is this rifle legal in all 50 states?
Check your local laws. The PS90 is a semi-auto rifle with a 16-inch barrel, so it is legal in most states, but some restrict magazine capacity or bullpup configurations. We ship to all 50 states but recommend verifying with your local FFL.
✅ Nationwide delivery (all 50 states)
✅ Ships 1-2 business days
✅ 30-day returns
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Browse more in Semi Auto Rifles or check out our FN Parts & Accessories.
Last updated: April 2026
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