Definitions for "Cheekpiece"
A hinged, shaped plate on either side of a helmet which offered protection to the cheek and jaw of the wearer. The shape of a cheekpiece is largely dictated by the line of the jaw, the cheebone, and the forehead, with cutouts (cusps - see below) in the region of the eye and mouth. Some pieces had flanges on their rear and lower edges to deflect blows outwards.
A raised part of the side of the stock of a shoulder-arm.
Keywords:  headpiece, bridle, straps, bit, connect
either of two straps of a bridle that connect the bit to the headpiece
Keywords:  drawback, rifle, nice, weight, feature
a nice feature but one drawback is that it does increase the weight of a rifle