An electrophotographic transfer sheet is disclosed, comprising a support having on at least one surface thereof a porous coating layer formed of a resin, wherein the volume of voids having a pore size of 10 m or more determined by a mercury press fitting method is from 7 to 50 mlm2. The firearm configuration is designed to reduce the recoil forces encountered by a user upon firing the weapon. The cavity, which remains open since a sacrificial material is not used to protect the cavity during polishing, contains residual particles after the polish process is completed.