Well, no actually, one can only claim that if one is profoundly ignorant of the times and the English language.
The 2nd Amendment specifically mentions "Arms", which at the time would have meant weapons which would have been carried by the average infantry or cavalry soldier. What today we would call the "Basic Infantry Weapon". At the time, that referred to basic firearms such as muskets, rifles, blunderbusses, and carbines, as well as bladed weapons such as swords and bayonets (and technically also pikes and lances, although their use was already more or less obsolete by that time). In modern parlance, that would be select-fire rifles, carbines, and submachine guns such as the AR-15, AK-47, and FN-P90 platforms (to name the three most popular worldwide).
Explosives, cannon, and other larger weapons would not have been classified as "Arms", they would have been classified as "Ordnance"; and indeed still are today for the most part. Crew-served weapons, artillery, bombs, grenades, and so on are Ordnance, and therefore their ownership is not protected by the 2nd Amendment.
