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CMMG Banshee Suppressed Upper 9mm 6.5" Black

CMMG Banshee Mk4 Suppressed Upper .300 BLK 6.5"

CMMG BANSHEE Mk4 Suppressed Upper Group .300 BLK 6.5"

AERO PRECISION AC-15M RIFLE - 5.56 NATO 16" BBL BLACK

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

AERO PRECISION M4E1 Threaded Complete Upper 16" 5.56 Barrel w/ 15" M-LOK ATLAS R-ONE Handguard - BLK

AERO PRECISION M5 308 Win Assembled Upper Receiver | OD Green