Geissele Super Duty MOD1 5.56 NATO 14.5" Complete Upper Receiver Pinned DDC

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

Geissele Automatics Super Duty Center Tab MK16 Assembled AR-15 Upper Receiver - 9.3" - DDC - BLEMULA

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

Geissele Automatics Super Duty Assembled AR-15 Upper Receiver - BLEMULA

Geissele Automatics Super Duty Center Tab MK16 Upper Kit - Assembled Upper - Black - 15" - BLEMULA

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

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