FN P90 TR
FN Herstal · Personal Defense Weapon · In Production · 1999
Also known as: P90 Triple Rail, P90 TR
Overview
The FN P90 TR (Triple Rail) is a select-fire personal defense weapon variant of the standard P90, introduced in late 1999 to replace the original integrated reflex sight with a MIL-STD-1913 (Picatinny) rail interface. The receiver hosts a single full-length top rail and two short side accessory-rail stumps, allowing the operator to mount any standard optic, weapon-light, or laser without the constraints of FN's proprietary sight base. Like the standard P90, it retains the bullpup layout, 50-round top-loading horizontal magazine, ambidextrous downward-ejecting design, and 5.7x28mm armor-piercing-capable cartridge. The TR is the dominant P90 variant currently produced and fielded.
Specifications
| Weight (empty) | 2600 g (91.7 oz) |
| Weight (loaded) | 3000 g (105.8 oz) |
| Overall Length | 505 mm (19.88") |
| Barrel Length | 264 mm (10.39") |
| Height | 210 mm (8.27") |
| Width | 55 mm (2.17") |
| Action Type | Blowback |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Single Stage |
| Magazine Capacity | 50 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 715 m/s (2346 fps) |
| Muzzle Energy | 511 J (377 ft·lbf) |
| Effective Range | 200 m (219 yd) |
| Maximum Range | 1800 m (1968 yd) |
| Rate of Fire | 900 rpm |
| Barrel Rifling | Right Hand |
| Rifling Twist | 231 mm (9.09") |
| Number of Grooves | 8 |
| Frame Material | Polymer |
| Slide Material | Steel |
| Barrel Material | Steel |
| Finish | Polymer Molded |
Calibers
- 5.7x28mm FN · primary · 5.7x28mm NATO — also known as 5.7x28, 5.7 FN
Features
- Firing modes: Semi Automatic, Full Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Ambidextrous Safety, Firing Pin Safety, Magazine Disconnect
- Features: Bullpup Layout, Horizontal Top Loading Magazine, Ambidextrous Controls, Downward Ejecting, Mil Std 1913 Full Length Top Rail, Two Side Accessory Rail Stumps, Triple Rail Receiver, Tritium Iron Sights
Base model
Service history
Operators
- Belgian Special Forces Group
- United States Secret Service
- Saudi Arabian Royal Guard
Conflicts
- War in Afghanistan (2001-2021)
- Iraq War (2003-2011)
- Mexican Drug War (2006-present)
Production
Production years: 1999-present
Triple Rail variant has been the primary production configuration since the early 2000s
Origin
Country of origin: Belgium
Designer: Stéphane Ferrard
Notes
A semi-automatic-only civilian/LE carbine variant with a 16-inch barrel is sold in the US as the PS90 (with a discontinued PS90 TR triple-rail version). The military P90 TR retains select-fire capability.
Background
When FN released the original P90 in 1990 with its proprietary integrated reflex sight, customers loved the gun but hated being locked into one optic - so by 1999 FN gave in, ripped the sight off, and bolted on a Picatinny rail. The TR has outsold the original P90 ever since.