AERO PRECISION M4E1-E Builder Set w/ EM15 Handguard - Partizan Bu

AERO PRECISION M4E1-T 5.56 NATO 11.5" Complete Upper Receiver | Black

AERO PRECISION M4E1 Multi Caliber Complete AR15 Lower Receiver w/ A2 Grip & M4 Stock - FDE

Vktr Industries V40051016001R MLOK Handguard Armor Black M16 15.05" Long

HOGUE AR15/M16 12.5" Free Float Hand Guard w/ Over-Molded Grip | Flat Dark Earth

AERO PRECISION M5 20" .308 CMV Complete Upper Receiver w/ ATLAS S-ONE M-Lok 15" Handguard

BALLISTIC ADVANTAGE Logic Series 9" M-LOK Fits AR15 | Black

Wraithworks Billet Slick Side AR-15 Upper Receiver - Black | No Forward Assist or Brass Deflector