IIRC, SIG P228
The standard issue firearm is a small, lightweight gun called the P99
It is whatever the BATF (Bureau of Alcohol, Tobacco, and Firearms) says it is since they do the legal defining of firearms. Since Cobray did the modification for sale, I suggest that you ask them, since they surely vetted the firearm through the BATF before selling it.
The Los Angeles Police Department's (LAPD) standard issue handgun is the Glock 17 Gen5. This firearm is a 9mm semi-automatic pistol known for its reliability and accuracy. It has been chosen for its durability, ease of use, and consistent performance by the LAPD.
The United States Secret Service switched to automatic pistols as standard issue weapons in the mid-1990s. This change was made to replace the older revolvers that were previously used.
Can it, yes. Should it be, no. If it is an antique, you would be destroying its collector value to get a "shooter" that would probably not be very good. If it is a modern reproduction, the BATF would be after you for manufacturing a firearm because as a percussion revolver it is not treated as a firearm, but once converted it is. The BATFE would not "be after you" for manufacturing a firearm. You may do this, as LONG as the firearm is not "transferred" by selling it. It must remain with the manufacturer....YOU for life. If you decide to sell the firearm, it must then be assigned a serial number and transferred legally through an FFL dealer.
There is at least one court decision which holds that a black powder gun, in this case a replica of a Remington cap and ball revolver, is a "firearm." In U.S. v. Green, 515 F.Supp. 517 (D.Md. 1981) the court refused to grant the defendant's motion to dismiss an indictment for being a felon in possession of a firearm, based on its interpretation that the replica is indeed a "firearm" and a "handgun" that he was prohibited from possessing. This was in spite of the BATF's opinion that the replica wasn't a "firearm" that the defandant would be prohibited from possessing.
Rear notch, front blade.
(in the US) So that the government can conduct a background check on you to determine if you are legally qualified to purchase a firearm. A private individual does not need a license of any sort to purchase a firearm from another private individual under federal regulations administered by BATF&E. State laws will vary, with some states requiring a permit to purchase a handgun. Only when a private individual purchases a firearm from a Federally Licensed Firearm's dealer, is the dealer required to conduct a background check, called a NICs check, to verify that there is no record of the individual being legally prohibited from possessing a firearm.
There are a lot of weapons which are standard issue. Assuming you're referring to the service rifle, it's the L85A2.
The standard issue RCMP gun is the Smith & Wesson 5946 9mm Double Action Only pistol.
best to speak to an attorney on the issue
Not sure what you mean by "class you" but any felony precludes a person from owning a firearm and no state will issue a firearms permit to somone who is a felon, unless you have had your rights restored.