[FONT="][FONT="](16) The term ‘‘antique firearm’’ means—[/FONT](A) any firearm (including any firearm witha matchlock, flintlock, percussion cap, or similar type of ignition system) manufactured in or before 1898; or(B) any replica of any firearm described in subparagraph (A) if such replica—(i) is not designed or redesigned for using rimfire or conventional centerfire fixed am-munition, or(ii) uses rimfire or conventional centerfire fixed ammunition which is no longer manufactured in the United States and which is not readily available in the ordinary channels of commercial trade; or(C) any muzzle loading rifle, muzzle loading shotgun, or muzzle loading pistol, which is de-signed to use black powder, or a black powder substitute, and which cannot use fixed ammunition. For purposes of this subparagraph, the term ‘‘antique firearm’’ shall not include any weapon which incorporates a firearm frame or receiver, any firearm which is converted into a muzzle loading weapon, or any muzzle loading weapon which can be readily converted to fire fixed ammunition by replacing the barrel, bolt, breechblock, or any combination thereof. [/FONT]