A silicon gun, also known as a caulking gun or sealant applicator, is a handheld tool used for dispensing silicone sealant, adhesive, or caulk. It typically features a metal or plastic frame with a trigger mechanism and a cradle to hold the cartridge of sealant. By squeezing the trigger, pressure is applied to the cartridge, forcing the sealant out through a nozzle at the tip. This allows for precise application of sealant along joints, seams, or gaps in various surfaces like walls, windows, and plumbing fixtures. Silicon guns are essential in construction, renovation, and DIY projects for sealing and waterproofing, providing a clean and professional finish while ensuring effective protection against moisture and air infiltration.