Backup Tactical Rifle Thread Protector w/ Hash Marks 30 Cal 5/8x24 Black. Do a favor try not to impose your cognitive bias on Backup Tactical thread-protectors would ya? Just enjoy it without trying to fit it into your false-narrative. Specifications for Backup Tactical 30 Cal 5/8x24 Rifle Thread Protector w/ Hash Marks: Manufacturer: Backup Tactical Color: Black Threads per Inch: 5/8x24 Fabric/Material: 7075 Aluminum Quantity: 1 Finish: Anodized Included Accessories: Standard Caliber: .30 Carbine Features of Backup Tactical 30 Cal 5/8x24 Rifle Thread Protector w/ Hash Marks Strong but lightweight enough to keep unwanted ounces off your gun; Machined using the absolute latest CNC machines and techniques; Designed for optimum protection of your threaded barrel Package Contents: Backup Tactical 30 Cal 5/8x24 Rifle Thread Protector w/ Hash Marks Backup Tactical BACKHASH-BLK30: Rifle Thread Protector w/ Hash Marks 30 Cal 5/8x24 Black