Build help?

I want to connect the end piece to the butt of the lightsaber but they are the same size. Not sure if there is a cheap way of making it happen. Any ideas?

 

Is the endcap also hollow? Then make a plug that attaches to both of them. Either cover up or cut off the threaded section.

 

Yes, hardware wise, you'll need some plug that runs through both of them. It will be better than gluing two hollow tubes together!

 

That seams to have been the way to do it! Thanks!