YHM BLACK DIAMOND SPECTER XL, UPPER RECEIVER GROUP 300BLK YHM-7820-300

BEAR CREEK ARSENAL 300 B/O COMPLETE UPPER 7.5 BRL 1:7 TWIST PISTOL LENGTH GAS MLOK

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

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

ONE HORSE 16" 300 Blackout Complete Upper Receiver

ONE HORSE AR15 A3 Stripped Upper Receiver Anodized

ONE OH-CU06 7.5 300 BLACKOUT COMPLETE UPPER RCVR

CMMG Banshee Mk4 AR-15 Upper Group .338 ARC 10.5" Barrel Black