The .40 Super is a heavy duty lengthened case similar to the .45 Auto cartridge but necked down to .40" caliber. Developed by Triton Cartridge. Conversion Systems can be found at Barsto Barrels or Clark Custom Guns.
* Starline Brass does not sell any loaded ammunition. What you are purchasing are brass cases only and will need to be loaded into ammunition in order to be fired from a firearm.