A Proton Hold-Out Pistol is a small, easily concealable type of proton weaponry. It is usually used as a backup or emergency weapon. Proton hold-outs come in a variety of forms. One, the Rafflur M-1 is approximately the size and shape of a cigar. Proton hold-outs use SEU microdiscs as a power source. They expend all of a disc's energy in one blast, causing 4d10 damage. Aside from that, they are largely similar in other respects to other types of hold-out pistols. Many jurisdictions heavily regulate or outright ban the possession or use of proton hold-outs.