OK grammar police; this should probably be titled “Handgun Reamers” because it includes both barrel and cylinder type reamers.

Revolvers need a cylinder type reamer as the pilot diameter is larger. Some reamers can be used for either cylinder or barrel by changing the pilot to the correct diameter.

Barrel reamers for semi-autos like 45 ACP and all its cousins will have a pilot designed to ride on the Lands of the rifling in the barrel.

Note: It has come to our attention that some pistols like the Springfield XD series have Melonited barrels.  Our reamers are High Speed Steel and will not cut through the Melonite. Carbide is necessary for such barrels, we do not stock carbide tools.