I got how they came up with the name
...reminds me of bomber gun sights that were just a line down a barrel.
Drill some "speed holes"/ports. Tap w/ threads and use drilled through allen head grub screws. Expoxy those in place. Then you'd end up with mechanical bond through and through. It'd be fiddly to do though.
If you've got a lost-cause broken one...I'll give it a shot on the mill.
OR....go full out with a under-lug, rail mounted, swiss-cheesed, monolithic bloc comp...spring loaded to push the barrel back and assist with rapid cycling...............................(oh wait....that was robocop's gun! LOL)