MANUFACTURER: Tapco FAMILY: Accessories MODEL: Threaded Barrel TYPE: Accessory-Barrels ITEM GROUP: Handgun Magazines CALIBER/GAUGE: 9mm FINISH: Black Nitride FINISH TYPE: Stainless Steel THREAD PATTERN: 1/2x28 SHIPPING WEIGHT: 0.35 lbs. ADDL INFO: Fits Springfield Hellcat ADDL INFO: Includes Thread Protector ADDL INFO: RDP Compensator Notch Included MFG MODEL NO: TAP22028 UPC: 810122800385