Most modern revolvers are "traditional double-action", which means they may operate either in single-action or self-cocking mode. The accepted meaning of "double-action" has come to be the same as "self-cocking", so modern revolvers that cannot be pre-cocked are called "double-action-only". These are intended for concealed carry, because the hammer of a traditional design is prone to snagging on clothes when drawn. Most revolvers do not come with accessory rails, which are used for mounting lights and lasers, except for the Smith & Wesson M&P R8 (.357 Magnum), Smith & Wesson Model 325 Thunder Ranch (.45 ACP), and all versions of the Chiappa Rhino (.357 Magnum, 9×19mm, .40 S&W, or 9×21mm) except for the 2" and 3" models, respectively. However, certain revolvers, such as the Taurus Judge and Charter Arms revolvers, can be fitted with accessory rails. thumb|300px|An advertisement for Iver Johnson revolvers claimed they were safe enough for children to handle. Revolvers most commonly have 6 chambers, hence the common names of "six-gun" or "six-shooter". However, some revolvers have more or less than 6, depending on the size of the gun and caliber of the bullet. Each chamber has to be reloaded manually, which makes reloading a revolver a much slower procedure than reloading a semi-automatic pistol.
most modern revolvers are "traditional double-action" which means they may operate either in single-action or self-cocking mode the accepted meaning of "double-action" has come to be the same as "self-cocking" so modern revolvers that cannot be pre-cocked are called "double-action-only" these are intended for concealed carry because the hammer of a traditional design is prone to snagging on clothes when drawn most revolvers do not come with accessory rails which are used for mounting lights and lasers except for the smith & wesson m&p r8 (357 magnum) smith & wesson model 325 thunder ranch (45 acp) and all versions of the chiappa rhino (357 magnum 9×19mm 40 s&w or 9×21mm) except for the 2" and 3" models respectively however certain revolvers such as the taurus judge and charter arms revolvers can be fitted with accessory rails thumb|300px|an advertisement for iver johnson revolvers claimed they were safe enough for children to handle revolvers most commonly have 6 chambers hence the common names of "six-gun" or "six-shooter" however some revolvers have more or less than 6 depending on the size of the gun and caliber of the bullet each chamber has to be reloaded manually which makes reloading a revolver a much slower procedure than reloading a semi-automatic pistol