Brenton USA Upper Receiver Scout 6mm ARC 18in Barrel 5/8x24 Thread 1-7.5 Twist Autumn MarbleKote Autumn MarbleKote. Pursuit rifles look feel and perform like you expect a perfectly balanced system should. Pursuit rifles are perfect for the hunter who values his time and effort in the woods and demands unwavering performance from his rifle. Specifications for Brenton USA Scout 18in 6mm ARC Upper Receiver: Manufacturer: Brenton USA Caliber: 6mm ARC Overall Length: 25.375 in Barrel Length: 18 in Barrel Profile: Medium Hunter Gas System Length: Mid Length Barrel Twist Rate: 1-7.5 Threads per Inch: 5/8x24 Muzzle Device: Thread Protector Fabric/Material: 7075 Aluminum Gas Block Journal Size-Diameter: .875 in Handguard Length: 13.25 in Weight: 4.52 lb Condition: New Barrel Material: 416R Stainless Steel Magazine Included: Yes Features of Brenton USA Scout 18in 6mm ARC Upper Receiver Receiver: 7075-T6 Aircraft Grade Aluminum w/ Brenton Patent Pending RecevierLock Controls and tolerance: HuntSpec Handguard: Brenton RealFeel PolyCore Charge Handle: Gas diverting BCG: 8620 Carrier w/ 9310 Bolt w/ NiB protective coating Life-Time Warranty: Brenton USA stands behind its products with a Forever Warranty against defects in materials and workmanship. Sub MOA Guarantee: All Brenton rifles are guaranteed capable of shooting sub-moa with suitable ammunition and optics. Promise: Brenton promises your rifle to look feel and perform like a premium hunting rifle should. Package Contents: Brenton USA Scout 18in 6mm ARC Upper Receiver Brenton USA UPS18AM6.0: Upper Receiver Scout 6mm ARC 18in Barrel 5/8x24 Thread 1-7.5 Twist Autumn MarbleKote Autumn MarbleKote