I got in my krink kit, now I cant seem to decide if I should keep the underfolder and put on the extension or take it off and get the noveske.

how heavy is the bbl extension? is it really completely solid like it looks or is it made out of a light material?

I want to be able to SBR it soon, but not anytime in the near future. my intent is to make the firearm complete with the underfolder and a noveske.

its heavy as shit, and its solid :P

My guess is about a pound. You could crush a man's skull with it easy. LOL!

Here is the one that I ordered from Sportsnut.  It is machined out of soft Aluminum, and I think no more than 1lb.  Not bad enough that it throws the ergonomics of the gun off to much.