FMK Firearms AR-15 Lower Polymer Black

This state of the art polymer allows for superior strength, unmatched durability and is extremely lightweight at only 4.3oz. The AR1 extreme is by far the strongest composite polymer lower on the market today.

  • Superior Strength
  • Unmatched Durability
  • Extremely Lightweight
  • Custom Engraving

FMK Firearms AR-15 Lower, Semi-automatic, Black Finish, Polymer FMKGAR1E