Abstract: A firearm rest is constructed and arranged to receive a weight plate of standard size and shape. The firearm rest can secure the weight against movement in three orthogonal directions. In some embodiments, a firearm rest comprises a frame defining a planar weight support surface, a front firearm support, and a rear firearm support, wherein the frame is constructed and arranged to support and secure a weight plate. In some embodiments, the frame comprises a clamp, a magnet, a strap, a vertically oriented shaft, a friction pad, and/or a platform having a raised perimeter flange. In some embodiments, the frame comprises a shaft that is moveable between first and second positions.