DC vs. Heller settled the meaning of the term in regards to Constitutional law. There's also a long history of "well-regulated" meaning well-equipped, in proper working order, etc. in English going back hundreds of years.
(linking to that site rather than its source since the source is sending a bad SSL cert)
There are other writings by the Founding Fathers from the time of the ratification of the US Constitution reiterating the need of a right for people to own arms in case it's necessary to overthrow the government, specifically including the government they had just created.
Escape From Tarkov but with a streamlined interface so you spend more time inside raids than outside of them (see: Fortnite, Hunt: Showdown). Also, it must have a killcam available after the raid finishes so new players can learn positioning and you can more accurately report hackers.