Navy SEALs use many different types of weapons, but some include the Colt M4A1, a carbine with a rail system for a variety of accessories, the MP5, a submachine gun designed for fighting in close-quarters, and the M82A1, a semi-automatic rifle renowned for its ability to pierce body armor and light combat vehicles. https://www.navyseal.com/the-weapons-of-navy-seals/