The Hank Sloan-designed holster was created exclusively for the FBI’s S&W Model 10 M&P .38 revolver. The accompanying 2 + 2 + 2 a.m.mo drop pouch was used to quickly “top off” bullets in the cylinder of the revolver when reloading.

This type of holster was designed and patented by Henry Lee "Hank" Sloan, who joined the FBI in 1935. He later became a firearms instructor at Quantico and by 1942 was placed in charge of firearms instruction. He retired in 1971.

The particular leather items pictured here belong to an individual who was the last FBI special agent hired by Director Hoover on May 1, 1972—just hours before Hoover’s death. This special agent, who donated these items to The FBI Experience, served in the FBI for 44 years and has also been a visitor services representative for The FBI Experience.