The A13-RG is your classic rail gun. It will punch holes with its metal slugs through just about anything. Left running too long, it does run the risk of overheating. It can be used one-handed, or two-handed for better accuracy.
Rail guns can use a variety of munitions, although with some it needs to be specifically modified to accept them. By default, rail guns use small machined metal slugs, but they can tolerate the use of other similar small magnetic objects.