Words have meaning. The meaning can be culture sensitive, time (era), context sensitive.
A proposal of 12 amendments to the Constitution was forwarded on September 25, 1789 to the 13 state legislatures. Ten of those amendments were approved by the states as the Bill of Rights, ratified Dec. 15, 1791.
In the late 1700s, if a group was thought to be “well regulated” it meant well trained to do certain things, as might be expected say of a militia. It had nothing to do with specification of their personal firearms, edged weapons, or other adjuncts to their group functioning. It meant simply they met and were trained together, as a militia, in the use of their personally selected weapons, and how to do group tasks.
This concept of “regulated” persisted into the 20th century, as long as railroads were largely controlled by timetables, and adherence to schedules. Train crews compared their watches to each other before a run to agree what the correct time was. A clock labeled Regulator, which could be carefully regulated to maintain much more accurate time than a pocket watch, was in most railway stations.
Yes, “well regulated” is in the Second Amendment. But it did not mean rules about gun characteristics. It meant that for the militia to be well trained, the “people” needed to be able to keep (own) and bear (carry about) arms (guns especially).
The British troop incursion into Lexington & Concord was to seize guns, bullets, powder, swords and other instruments used for the common defense by the militia. The British raids were to deny Americans use of arms for their common defense. It had nothing to do with hunting or “plinking.”
People are entitled to their own opinions about gun control. They are not entitled to their own facts as to what the Second Amendment was written to protect.