ProMag Magazine FN PS90 5.7x28mm 50-Round Polymer Clear

The ProMag FN PS90 5.7x28mm 50-round clear polymer magazine is a high-capacity feeding solution built for the FNH PS90/P90 platform. If you're running one of these compact, magazine-fed rifle systems, you'll appreciate the transparency that lets you count rounds at a glance—no guessing how much ammunition you have left during extended range sessions or training. The clear construction gives you real-time visibility into your magazine status without breaking the gun down or removing the mag.

This is a working magazine designed around the 5.7x28mm cartridge's ballistics and feeding characteristics. The magazine body is constructed from clear polycarbonate, a durable engineering polymer that balances weight savings with impact resistance. The internal follower, base plate, and feeding mechanism are molded from glass-reinforced black polymer, which handles the spring tension and cartridge cycling without the brittleness you'd get from unreinforced polymer alone. That reinforcement keeps the feeding reliable across hundreds of rounds.

The 50-round capacity makes sense for the PS90's compact form factor—you get serious ammunition capacity without a magazine that significantly changes the gun's handling. Whether you're setting up for a fun day at the range, testing ammunition, or building out your PS90 for practical rifle duties, a high-capacity magazine in a clear body is a no-brainer addition to your magazine rotation.

Key Features

• 50-round capacity for the FNH PS90/P90 platform
• Clear polycarbonate construction for round-count visibility
• Glass-reinforced polymer follower, base plate, and feeding mechanism for durability
• Designed specifically for 5.7x28mm ammunition

Specifications

Caliber	5.7x28mm
Capacity	50 rounds
Platform	FNH PS90/P90
Body Material	Clear Polycarbonate
Internal Components	Glass-reinforced black polymer (follower, base plate, feeding mechanism)
Brand	ProMag

Frequently Asked Questions

Will this magazine work with my FNH PS90?

Yes—the ProMag FN PS90 magazine is designed specifically for the FNH PS90 and P90 series rifles chambered in 5.7x28mm.

Why is the magazine clear?

The clear polycarbonate body lets you see your remaining ammunition count without removing the magazine from the gun, which is helpful during range sessions or training drills.

Is the feeding mechanism durable?

The internal follower, base plate, and feeding mechanism are made from glass-reinforced polymer, which provides reinforcement to handle spring tension and cartridge cycling reliably.

What capacity does this magazine hold?

This ProMag magazine holds 50 rounds of 5.7x28mm ammunition.