FN America FN15 DMR3 Semi-automatic Rifle 18″ CHF Barrel


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The FN 15 DMR3 designated marksman rifle has an 18-inch hybrid profile barrel that is chrome-lined and made from FN’s proprietary machine gun steel. The rifle also features a rifle-length gas system, a SureFire ProComp muzzle brake that reduces recoil and muzzle rise, and Geissele two-stage G2S trigger that allows for precise trigger control.

Enhanced accuracy from the FN 15® DMR3 enabling you to keep on target for faster shot-to-shot recovery is achieved from the combination of the 18-inch hybrid profile barrel, rifle-length gas system, Geissele two-stage G2S trigger and SureFire ProComp muzzle brake that greatly reduces both recoil impulse and muzzle rise and that allows precise and accurate trigger control.

At the heart of the DMR3 is the FN hammer forged, 18-inch, 1:8 twist, chrome lined barrel. The barrel has FN’s Hybrid profile that provides the stiffness and heat absorption needed for accurate, high volume shooting. Long barrel life is achieved by hammer forging from FN’s proprietary “machine gun barrel” steel and chrome lining.    

The rifle also features a fully free-floated Hodge Defense-designed wedge lock handguard, a low-profile gas block that is pinned to the barrel, HP/MPI-tested and certified bolt and M16-style bolt carrier group for complete reliability and performance.

  • 18-inch FN hammer forged barrel
  • SureFire ProComp muzzle brake
  • 14.6″ free float handguard, Hodge Defense wedge-lock for rigidity
  • Ambidextrous Radian charging handle and safety selector
  • Geissele G2S 2-stage precision trigger
  • 30-round FN polymer magazine


  • CALIBER: 5.56x45mm
  • OPERATION: Direct impingement
  • MAG CAPACITY: 30 Rd.
  • WEIGHT: 7.4 lb.
  • OVERALL LENGTH: 35.2″ – 38.5″
  • TWIST RATE: 1:8 RH



18-inch Hybrid profile barrel, chrome-lined with 1:8 twist, made from FN’s proprietary “machine gun barrel” steel

Geissele G2S 2-stage precision trigger

SureFire ProComp muzzle device




MIL-SPEC forged aluminum receiver in either black anodize or factory Cerakote finish (FDE or Gray)

Rifle-length gas system with H buffer and pinned gas block

M16-style bolt carrier group made from 8620 steel

HPT/MPI-tested and certified bolt made from Carpenter 158

Gas keys properly sealed, torqued and staked according to MIL-SPEC



Fully free-floated 18-inch Hybrid profile barrel with 1:8 twist, Chrome-lined for longevity

FN Proprietary CMV barrel steel

High Pressure tested, MPI after proof firing

SureFire ProComp muzzle brake



14.6” free float handguard, Hodge Defense wedge-lock for rigidity

Continuous Picatinny rail at 12 o’clock position

Multiple M-LOK slots at 3, 6, 9 o’clock positions for lights, lasers and other accessories.



Custom FN 6-position, snag-free buttstock with rubber butt pad and integrated QD attachment point

Ergonomic FN pistol at 19.5-degree grip angle and aggressive texturing for secure grip



2-stage Geissele GS2 trigger, total trigger pull range 4.25 – 4.75lbs (Stage 1, 2.75-3lbs; Stage 2, 1.5-1.75lbs)



Ambidextrous Radian Raptor-LT charging handle and safety selector

MIL-SPEC-style magazine and bolt release



30-round FN polymer magazine

Additional information

Weight 118.4 oz
Dimensions 36 × 8 × 4 in


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