Need some help

Can someone tell me what to use to inject the epoxy into a glue in barrel block?

I have a barrel block that was made by Dan Lilja and the barrel is glued into the block. I heated the block and pressed the barrel out. Now I need to know how to inject the epoxy, grease gun etc.,and what kind of epoxy to glue my new barrel back in. Any and all help will be appreciated. Thanks in advanced.
 
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