Assuming the bankruptcy court approves that sale (and they almost certainly will) Ruger will own Marlin.
What that means isn't totally clear. I doubt Marlin has any current patents. Ruger will get the name, some finished products, some unfinished products and parts, maybe some tooling ........? Maybe some facilities ? There's probably not a lot more there.
Ruger may choose to continue some Marlin products and they may choose to discontinue some. Most companies prefer to not compete against themselves. So unless Ruger can find a specific market for the individual Marlin lines, they may close a lot of current Marlin lines down.
When Chrysler purchased AMC they discarded everything but the Jeep line. That made sense because at the time, Jeep was the only profitable division of AMC.
Ruger has a long history of innovative manufacturing processes to hold costs down. I suspect Ruger will look at the Marlin products and decide if anything competes against current Ruger products and eliminate anything that isn't profitable. I also suspect Ruger will look at the Marlin line up and see if they can use Ruger's manufacturing techniques to get production costs down.
I don't think Ruger was really competing with Marlin, so Ruger may be looking to expand their line rather than to kill off Marlin.
We'll See.