Manticore Arms Scorpion EVO Tri-Lug Adapter Black 18mm. The Scorpion EVO Tri-Lug Adapter is marked MA USA to denote a part that counts towards 922r compliance. Specifications for Manticore Arms Scorpion EVO Tri-Lug Adapter 18mm: Manufacturer: Manticore Arms Fabric/Material: 8620 steel with Rockwell 50C heat treat Color: Black Length: 2.4 in Weight: 2 oz Condition: New Gun Model: CZ Scorpion EVO 3 Features of Manticore Arms Scorpion EVO Tri-Lug Adapter 18mm Material: 8620 steel with Rockwell 50C heat treat Finish: Black oxide Weight: 2.0 ounces Length: 2.4 inches Package Contents: Manticore Arms Scorpion EVO Tri-Lug Adapter 18mm What firearm models does the manufacturer say Manticore Arms Scorpion EVO Tri-Lug Adapter 18mm is compatible with? The manufacturer says that Manticore Arms Scorpion EVO Tri-Lug Adapter 18mm is compatible with CZ Scorpion EVO 3Manticore Arms MA-14875: Scorpion EVO Tri-Lug Adapter Black 18mm