The Fusion from Deadlywind is a tool-less adapter for mounting an Apex2 tip onto the end of a Fibur, Fibur-X, Whip Tip, or Null barrel. The tool-less quick clamping method of the Fusion compliments the Apex2 tool-less design. This is only the adapter. You will need the tip from an Apex2 barrel and either a Fibur or Null barrel to mount it to. The new universal version includes a removable sizer ring to fit the smaller Null barrels or 0.688 small bore Whip Tips. If you do not use the sizer ring, it will fit the Fibur, Fibur-X, and 0.710 Whip Tips. The Fusion + Apex2 tip will add 3" total length to the end of your barrel. So if you have a 12" Fibur, this setup will make it 15" long tip to tail. Combine with the Deadlywind Reskin for the ultimate Apex2 DW package.
The inner diameter (ID) of the Null adapter is 0.790". The inner diameter (ID) of the Fibur adapter is 0.825"