Honestly, just let us ADS and shoot in the main areas. You can already grab a shield, go to the range, ADS, then walk out while still aiming, and you can still shoot.
Friendly fire is disabled out of the designated shooting areas anyways. That way we can see our sights, and hear our gunshots.
we won't do this but we will improve the overall usability because yeah, it can be nice to check your gun out and know what the optics are like. all in due time. :)