A hybrid collocation-Galerkin-Sn method for solving the one-dimensional Boltzmann transport equation is presented. For problems with highly anisotropic scattering, this method offers many advantages relative to the standard Sn method. It is particularly useful for charged-particle calculations and can be implemented easily in standard Sn codes without changes to the standard solution algorithm. The hybrid method is compared with the standard method both theoretically and computationally.