This 16 inch, 9mm caliber barrel was specifically designed by HYDRA to work with our 9mm magazine wells. It is for use in a blow back system.  We highly suggest customers consider using our 2X Super Recoil Spring along with our Rate and Recoil Reducing Buffer when configuring the HYDRA Modular weapon system to shoot using  mm. This barrel has the mil-spec Z class phosphating.  Please remember also to order the HYDRA® 9mm blow back bolt for use with this barrel.

Due to the Glock® style unsupported chamber, it is NOT recommended to use +P or Winchester type ammo in this configuration.