The problem with using "A well regulated Militia being necessary to the security of a free State" as a method to enact gun control is that most people use the modern interpretation of regulated. Lets take some writings of the founders on "A well regulated":
We can begin to deduce what well-regulated meant from Alexander Hamilton's words in Federalist Paper No. 29:
The project of disciplining all the militia of the United States is as futile as it would be injurious if it were capable of being carried into execution. A tolerable expertness in military movements is a business that requires time and practice. It is not a day, nor a week nor even a month, that will suffice for the attainment of it. To oblige the great body of the yeomanry and of the other classes of the citizens to be under arms for the purpose of going through military exercises and evolutions, as often as might be necessary to acquire the degree of perfection which would entitle them to the character of a well regulated militia, would be a real grievance to the people and a serious public inconvenience and loss.
The Federalist Papers, No. 29.
Hamilton indicates a well-regulated militia is a state of preparedness obtained after rigorous and persistent training. Note the use of 'disciplining' which indicates discipline could be synonymous with well-trained.
This quote from the Journals of the Continental Congress, 1774-1789 also conveys the meaning of well regulated:
Resolved , That this appointment be conferred on experienced and vigilant general officers, who are acquainted with whatever relates to the general economy, manoeuvres and discipline of a well regulated army.
--- Saturday, December 13, 1777
Do you think the U.S. government was concerned because the Creek Indians' tribal regulations were superior to those of the Wabash or was it because they represented a better trained and disciplined fighting force?
That the strength of the Wabash Indians who were principally the object of the resolve of the 21st of July 1787, and the strength of the Creek Indians is very different. That the said Creeks are not only greatly superior in numbers but are more united, better regulated, and headed by a man whose talents appear to have fixed him in their confidence. That from the view of the object your Secretary has been able to take he conceives that the only effectual mode of acting against the said Creeks in case they should persist in their hostilities would be by making an invasion of their country with a powerful body of well regulated troops always ready to combat and able to defeat any combination of force the said Creeks could oppose and to destroy their towns and provisions.
--- Saturday, December 13, 1777.
I am unacquainted with the extent of your works, and consequently ignorant of the number or men necessary to man them. If your present numbers should be insufficient for that purpose, I would then by all means advise your making up the deficiency out of the best regulated militia that can be got.
--- George Washington (The Writings of George Washington, pp. 503-4, (G.P. Putnam & Sons, pub.)(1889))
And finally, a late-17th century comparison between the behavior of a large collection of seahorses and well-regulated soldiers:
One of the Seamen that had formerly made a Greenland Voyage for Whale-Fishing, told us that in that country he had seen very great Troops of those Sea-Horses ranging upon Land, sometimes three or four hundred in a Troop: Their great desire, he says, is to roost themselves on Land in the Warm Sun; and Whilst they sleep, they apppoint one to stand Centinel, and watch a certain time; and when that time's expir'd, another takes his place of Watching, and the first Centinel goes to sleep, &c. observing the strict Discipline, as a Body of Well-regulated Troops
--- (Letters written from New-England, A. D. 1686. P. 47, John Dutton (1867))
The following are taken from the Oxford English Dictionary, and bracket in time the writing of the 2nd amendment:
1709: "If a liberal Education has formed in us well-regulated Appetites and worthy Inclinations."
1714: "The practice of all well-regulated courts of justice in the world."
1812: "The equation of time ... is the adjustment of the difference of time as shown by a well-regulated clock and a true sun dial."
1848: "A remissness for which I am sure every well-regulated person will blame the Mayor."
1862: "It appeared to her well-regulated mind, like a clandestine proceeding."
1894: "The newspaper, a never wanting adjunct to every well-regulated American embryo city."
The phrase "well-regulated" was in common use long before 1789, and remained so for a century thereafter. It referred to the property of something being in proper working order. Something that was well-regulated was calibrated correctly, functioning as expected. Establishing government oversight of the people's arms was not only not the intent in using the phrase in the 2nd amendment, it was precisely to render the government powerless to do so that the founders wrote it.
Your a word twister or flat uneducated on the meaning of the words of the 2nd 2nd Amendment if you juxtapose "well regulated" in a gun control argument.