The Rollsizer Caliber Conversion Kit .380 ACP is specifically designed for accurate and reliable processing of .380 ACP (9mm Short) brass with the Rollsizer Automatic Decapper Base Unit. It includes all necessary components to quickly convert the unit for this compact pistol caliber. Precision-machined parts ensure smooth operation, even with thin-walled brass at high volumes. Perfect for reloaders regularly processing training or defensive loads in .380 ACP.