Brass cartridge cases and Glock magazines by Jagemann Sporting Group

    Jagemann Sporting Group is a manufacturing company, which makes brass cases and polymer magazines.

    It is a family owned business with two facilities and headquartered in Manitowoc, WI. One of the facilities is located at the company’s headquarters and this is where they make their brass cartridge cases. The second one is in Murfreesboro, TN and houses plastic injection molding machinery for producing handgun magazines.


    Jagemann’s brass case offerings include nine most popular handgun calibers: .380 Auto, 9×19 mm, .357 SIG, .40S&W, 10mm Auto, .45 Auto, .38 Special, .357 Magnum and .45 Colt. However, the rifle cartridge case product line is somewhat unusual and includes only two products – .300 BLK and 4.6x30mm !


    4.6x30mm brass case

    The cases pass Vickers hardness testing, dimensional inspection and they also offer cartridge case customization, which allows to fine tune the case for a specific weapon or projectile.


    Jagemann also makes four types of polymer magazines. Two of them are called Jag 17 and Jag 19 and are designed for Glock 17 and Glock 19 respectively. Other two are 9mm and .22 LR magazines for 1911 pistols. Latter is compatible with a number of 1911 .22LR conversions such as those made by STI, Kimber, Night Hawk Custom, Advantage Arms and several other companies.


    Jag 19 magazines for Glock 19


    Jagemann .22 LR magazines for 1911 pistols

    The magazines feature redesigned feed lip geometry and reinforced automotive grade engineered resin construction. The video below shows their magazine testing process:

    Considering that this company has pretty impressive manufacturing capabilities, it is interesting what will they grow into in the firearms industry.



    5757 West Custer Street
    WI 54220
    United States

    Phone Number:

    Hrachya H

    Managing Editor

    Being a lifelong firearms enthusiast, Hrachya always enjoys studying the history and design of guns and ammunition. He also writes for and
    Should you need to contact him, feel free to shoot him a message at [email protected]