Hatsan QE Big Bore .357/.457 M18x1 Adapter A54

Features:

• Matte black Anodized
• CNC
• Includes knurled thread protector
• Compatible for the .357 and .457 model
• The new Factor BP in .357 cal has M14x1.25 threads on the QE system, so for that air rifle you need a moderator with an M14x1.25 endcap, not an adapter.