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FN 15® Guardian™

Available for commercial and law enforcement.

MSRP: $999.00

The FN 15 Guardian applies the FN battle-proven blueprint to a brand new rifle, making FN quality accessible to all home defenders and sport shooters. Proven to perform on any front, this new carbine has the critical upgrades for tack-driving accuracy, with a nitrided 16-inch CMV steel MIL-B-11595 barrel and 15-inch free-float aluminum handguard. The mid-length gas system reduces recoil impulse with a low-profile gas block impinging gas to the mil-spec bolt carrier.

At 6.6 lbs., the light, fast-handling carbine includes the right upgrades for constant control. The pistol grip and magazines are in-mold stippled for superior grip, with the 6-position stock offering a tight lock-up and an ideal cheek weld. A 24-slot M-LOK® free-float aluminum handguard offers all the mounting real estate for lights and sights and an anti-rotation pinch-lock design mates to the upper receiver, ready to mount any optic.

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FN 15 Guardian Sell sheet

36-100740FN15 GUARDIAN BLK, 1X30845737016982
Shop FN 15 Accessories


  • Caliber: 5.56x45mm
  • Operation: Direct impingement
  • Mag Capacity: 30 Rd.
  • Weight: 6.6 lb.
  • Barrel Length: 16"
  • Overall Length: 32.1" - 35.5"
  • Twist Rate: 1:7 RH


15-inch free-float handguard with continuous 12 O’clock Picatinny rail, 24 M-LOK® slots at 3, 6 and 9 O’clock

Precision-tuned 16-inch barrel, mid-length

Mid-length gas system, low-profile gas block


Slick-side upper receiver reduces snag points and cleaning time

9310 Steel bolt, M16-style bolt carrier group, MPI/HP tested

Gas key MIL-SPEC sealed, torqued and staked

Forged 7075 lower receiver; hard coat anodized


16-inch nitride coated barrel; 1:7 twist

HBAR profile

4150 Chrome-Moly-Vanadium Steel MIL-B-11595 MPI/HP tested

High pressure tested, MPI after proof firing

A2-style flash hider, 1/2”x28 TPI


15-inch extruded aluminum, free-floating, continuous top rail, 24 M-LOK® slots


Custom FN 6-position, snag-free buttstock with multiple sling attachment points

Ergonomic FN pistol grip at 19.5° angle and aggressive texturing for complete control


MIL-SPEC trigger


MIL-SPEC charging handle and safety selector


30-round FN polymer magazine