The GP1000/GP1100 has a compact grip and is incredibly light weight. It's is ideal for the person with a smaller hand. It's just easier to use! The Allpro Gold Pro Series caulk guns are the very best caulk guns on the market. They're extremely lightweight, tough and trouble-free. The Gold Pro guns solve problems instead of creating them. The ergonomic grip allows for comfortable, all-day use while reducing stress in your hands and arms. With a rotating barrel (3000 & 4000 only), rugged composite construction, a sharp precision cutter these guns will last many, many years of use.