Founded in Detroit, Michigan, Cor-Bon/Glaser Ammunition originated when Peter Pi Sr. started making handgun hunting ammo in 1982 because the commonly available ammunition at that time was performing poorly.

In 2017 the Company was sold to TA Perrine and moved to Wooster, OH.

In 2021 the company was sold again to an investment group out of Sandusky, OH, On June 23, 2011 the company opened the CorBon Law Enforcement Training Center (CLETC) in Sturgis, South Dakota.

The center has several shooting ranges to train law enforcement officers.

[7] In the same manner as the .32 NAA, it was based on a .45 ACP case necked-down to .40.