MP38 / MP40 Collar Nut (2 Sided)

The MP38 / MP40 Collar Nut (2 Sided) secures the barrel assembly to the receiver and is one of the distinguishing components found on early MP38 and MP40 submachine guns. Unlike the later six-sided version, this collar nut features two opposing flats, allowing it to be tightened or removed with the correct armourer's tool while maintaining a secure barrel connection.

Manufactured to the original dimensions, this replacement collar nut is suitable for MP38 and early MP40 models that were originally equipped with the two-sided design. It is an excellent choice for historical restorations, replacing damaged parts, or completing an authentic early-war build.

Precision machined from high-quality steel, the collar nut offers accurate threads and a precise fit to ensure proper barrel alignment and secure installation. Its faithful reproduction of the original design makes it an ideal component for collectors, restorers, and armourers seeking historical accuracy.