Well, not quite.
With the dimples gone, there's nothing to prevent the magazine cap from unscrewing, and it will vibrate loose.
Also, with the dimples gone, there's nothing to hold the magazine spring in.
There are several ways to handle this, with the the simplest being to buy an old style magazine spring retainer.
This is an old-style Remington spring steel split "Cup-washer" that's inserted into the end of the magazine tube to retain the spring.
These are very easy to find and cheap.
To retain the magazine cap, the easiest way is to wrap some Teflon pipe tape around the magazine threads, then screw the cap on tight.
The tape and screwing the cap on tight will keep it in place.