The 3M Professional Caulking Gun is a high-performance rod-driven applicator gun for dispensing single-component 3M caulks, sealants and adhesives in collision repair. Its cast steel construction holds up under challenging conditions, and its friction feed operation helps ensure smooth beads and professional results. Added features include a hanging hook and thumb-activated pressure release.A Caulking Gun Designed for Professionals When you need a little extra in a rod-driven applicator, our 3M Professional Caulking Gun is designed specifically for professional application of 3M sealants, caulks and adhesives. The gun is designed for 1/10-gallon cartridges, ensuring a precise fit with a range of 3M products. This friction feed applicator gun makes it fast and easy to create smooth beads for a variety of collision repair applications. Trigger-pull operation makes extruding the material easy and intuitive. The gun features a compact design including a curved hook for hanging on racks or walls and a thumb-operated pressure release lever. Every major component of the 3M Professional Caulking Gun is built from durable cast steel, including the barrel, rod, thumb release, handle and trigger for long product life. Better Science in Collision Repair from 3M 3M delivers products with scientific development built in for an added professional edge. With its features for durability, convenience and smooth application, our 3M Professional Caulking Gun is another great example of how 3M applies science to the lives of auto repair technicians.