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Quick Look

The FN P90 is a Belgian compact personal defense weapon introduced in 1990 by FN Herstal. Designed for close-quarters combat, it features a bullpup design and a top-mounted magazine for ambidextrous use. It remains popular with military and law enforcement agencies worldwide for its innovative design and high-capacity 5.7x28mm chambering.

Why It's a Top Choice

Ambidextrous design suited for all operators
High-capacity 50-round top-mounted magazine
Lightweight and compact for close-quarters
Low recoil 5.7x28mm cartridge for control
Integrated reflex sight on many variants

Key Variants

FN P90 Tactical

Enhanced for law enforcement with reflex sight and rail systems.

FN P90 TR

Standard military model known for durability and reliability.

FN PS90

Semi-automatic civilian version with a longer barrel and fixed sights.

Competitor Comparison Table

Feature	FN P90	Heckler Koch MP7	Calico M960
MSRP	$2,900	$3,200	$1,800
Capacity/Size	50-round, bullpup	40-round, compact	50-round, light machine gun
Weight	6.6 lbs (3.0 kg)	4.9 lbs (2.2 kg)	7.3 lbs (3.3 kg)
Optics-Ready	Integrated reflex sight (select models)	Picatinny rail standard	Limited optics options
Trigger Type	Double-action striker-fired	Double-action striker-fired	Single-action
Notable Pro	Compact bullpup with high capacity	Versatile, highly ergonomic	Innovative rotating magazine
Notable Con	Proprietary ammo limits availability	Smaller magazine capacity	Heavier, less compact

Best Use Cases

Personal defense in close quarters
Law enforcement and military use
Vehicle protection roles
Special operations requiring compact firearms
Range training with low recoil ammunition

FAQs

Can I use standard pistol ammunition in the FN P90?

No. The FN P90 is chambered exclusively for 5.7x28mm ammunition, which is not interchangeable with common pistol calibers.

What is the magazine capacity of the FN P90?

The FN P90 uses a unique top-mounted magazine holding 50 rounds of 5.7x28mm ammunition.

How does the bullpup design benefit the FN P90?

The bullpup layout places the action behind the trigger, reducing overall length while keeping barrel length optimal for accuracy.

FN P90 for Sale