Well fitted dolls heads, side clips, hinge joints, cross bolts, under bolts, rotary bolts, under lugs, etc. all will contribute to a tight and long lived action, as does good action design. When these features are poorly done, the forces of firing begin the process of beating the gun to death starting with the first shot. Well made and well designed guns stand the test of time. Cheap guns quickly become rattletraps. The proof is in the parts boxes at every gun show. Although many more cheap Crescent and cheap Belgian doubles were sold at the turn of the last century, there are many more of the higher quality guns still in everyday use today.
