If yours is the 'always exposed' adjustment dials than there should have been a 'key' of some kind included in the package for screwing down the mount, looks like this? That flat blade on the back will be sized to adjust your red dot, to avoid damaging things with a random metal screwdriver.

Then you _flip the cap upside down_ and use it to adjust the actual adjustment knob inside!

So the big slotted 'dial' is where the battery goes, ignore that entirely once you put the battery in.

The tiny little 'knob' beside it? That's the up/down cap, the one on top is the left/right cap.

So it likely has caps on the actual knobs! I have a Romeo5 as well, I think similar to yours?

Angled in the grip, it uses a custom bolt carrier with that 'tail' sliding down into the grip like a Benelli M4 semi-auto shotgun does. So you're limited to calibers that don't require a different bolt carrier (different BOLT is okay though!), like 6.5 Grendel, .458 SOCOM, or .350 Legend.

Here's probably my most niche one, .458 SOCOM, up to a 600gr round. Which yes, is more than an ounce so more than most 12-gauge slug rounds.

Normally it eats up much more reasonably 250gr rounds though.

So I might as well post SOMETHING so BlueSky stops freaking out even looking at this account from having zero posts.

So hi, I'm a leftist that enjoys computers, offroading, and yes firearms.

I have a very specific style, and even casual photos I follow such basic gun safety steps as chamber flags.