PSA Sabre Forged 14.7" 5.56 NATO 13" Lock-Up Rail Upper with SilencerCo ASR Mount

Radical Firearms 16" 5.56 NATO 1:7 Mid-Length SOCOM Barreled Upper - 12" M-LOK FCR Rail - Open Box

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

Geissele Automatics Border Patrol Center Tab MK20 Assembled AR-15 Upper Receiver - 9.6" - BLEMULA

Geissele Automatics 5.56 USASOC Improved Complete Near-Clone AR-15 Upper Receiver - Desert Dirt- 10.3" - Open Box

AERO PRECISION AR15 5.56 NATO / 223 Rem 20" Complete Upper Receiver w/ Carry Handle | Black

TacFire AR-15 .300 Blackout Unassembled Upper Receiver Kit - 5"

Aero Precision AR-15 Stripped Upper Receiver - Slick Side - Black