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FN 15® TAC3 Upper Assembly

Complete Upper Receiver Assembly

MSRP: $1,210

Built from a MIL-SPEC foundation with HP/MPI-tested and certified bolt and M16-style bolt carrier group with mid-length gas system and H buffer, the TAC3 upper performs reliably. Superior accuracy and performance come from the company’s signature chrome-lined, cold hammer-forged barrel made from FN proprietary steel, fully free-floated within a Hodge Defense-designed wedge lock handguard. The rigid handguard, affixed with a proprietary barrel nut and anti-rotation technology, provides continuous 12 o’clock rail space and multiple M-LOK attachment points for lights, lasers and other accessories while minimizing deflection during hard use. Outfitted with an ambidextrous charging handle, the FN 15 TAC3 upper receiver is ready to drop in on any MIL-SPEC AR-15 Lower.

Sell Sheet

20-100748FN TAC3 Upper Assembly845737015961


  • Caliber: 5.56x45mm
  • Weight: 4.35 Lbs.
  • Barrel Length: 16"
  • Twist Rate: 1:7 RH


FN Handguard with Hodge Defense-designed wedge-lock technology and proprietary barrel nut for an extremely rigid setup that allows for a fully free-floated barrel.

Radian Ambidextrous Charging Handle

16-inch government profile, chrome-lined, cold hammer-forged barrel made from FN’s proprietary steel.

M16-style MIL-SPEC bolt carrier group and HPT/MPI-tested bolt made from Carpenter 158

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


Extremely rigid 14 5/8-in Hodge Defense-designed wedge lock handguard composed of 6061 aluminum with proprietary barrel nut and anti-rotation technology resulting in minimal deflection

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.


16-inch government profile chrome-lined and cold hammer-forged barrel with 1:7 twist

FN Proprietary CMV barrel steel, DIN Spec 21CrMoV5-11

High Pressure tested, MPI after proof firing

A2-style muzzle device

Fully free-floated