Durs Egg (1745–1822) was a Swiss-born British gunmaker,^[1] noted for his flintlock pistols and for his company's production of the Ferguson rifle.

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Egg was apprenticed in Solothurn and Paris before establishing his own business in London in 1772. He was a contemporary of Joseph Manton, Jean Samuel Pauly, and the uncle of Joseph Egg.

A pair of Durs duelling pistols are the subject of the mystery novel The Judas Pair.