Geissele Automatics Super Duty Mod 1 Upper Receiver Group 16″ HBAR 5.56, Desert Dirt Color Geissele Part Number 08-627S
Geissele Automatics Super Duty Mod 1 Upper Receiver Group 16″ HBAR 5.56, Black Geissele Part Number 08-627B
Geissele Automatics Super Duty Mod 1 Upper Receiver Group 14.5″ HBAR 5.56, Desert Dirt Color Geissele Part Number 08-626S
Geissele Automatics Super Duty Mod 1 Upper Receiver Group 14.5″ HBAR 5.56, Black Geissele Part Number 08-626B
Geissele Automatics Super Duty Mod 1 Upper Receiver Group 12.5″ 5.56, Desert Dirt Color Geissele Part Number 08-545S
Geissele Automatics Super Duty Mod 1 Upper Receiver Group 12.5″ 5.56, Black Geissele Part Number 08-545B
Geissele Automatics Super Duty Mod 1 Upper Receiver Group 8″ 300BLK, Desert Dirt Color Geissele Part Number 08-553S
Geissele Automatics Super Duty Mod 1 Upper Receiver Group 8″ 300BLK, Black Geissele Part Number 08-553B
Geissele Automatics Super Duty Mod 1 Upper Receiver Group 10.3″ 5.56, Desert Dirt Color Geissele Part Number 08-543S
Geissele Automatics Super Duty Mod 1 Upper Receiver Group 10.3″ 5.56, Black Geissele Part Number 08-543B
