Lee Precision PM Expander Plug .40 S&W and 10mm Auto SE2144

PM Expander Plug .40 S&W / 10mm Auto SE2144

The expander plug is the internal tip of the Lee Precision Powder Through Expanding Die, the die that flares the case mouth and simultaneously allows powder to flow from the powder measure into the case. This original spare part allows you to restore a die with a worn or damaged tip to working order without replacing the entire assembly.

The plug works in tandem with the expander body and sealing o-rings: the diameter of the step determines the extent of the flare and, consequently, the ease with which the bullet seats on the case neck. The measurement is caliber-specific, meaning the plugs are not interchangeable between different calibers; in recent versions, Lee has adopted the stepped profile known as "M style," which creates a short cylindrical section before the flare.

Main features

• Component: expander plug for powder through expanding die
• Caliber: .40 S&W / 10mm Auto
• Lee Code: SE2144
• Quantity required: 1 piece per die
• Listed by Lee as a spare part for the .40 S&W Load-Master (code 90940)
• "M style" stepped profile

Recommended use

Replacement part for the Lee expander assembly in .40 S&W and 10mm Auto, including the one fitted to the .40 S&W Load-Master (90940). Check the code on your die's parts diagram before ordering.

Manufacturer code: SE2144