Winchester 4+1 .308 Win 20" 5-Round Threaded Barrel Rifle

The Proof Research Winchester 4+1 .308 Win 20" 5-Round Threaded Barrel Rifle delivers precision and modularity for long-range hunters, competitive marksmen, and tactical professionals who demand both accuracy and suppressor compatibility. Built on the Winchester platform, this rifle combines the reliability of a proven action with Proof Research's reputation for match-grade barrels and advanced engineering. The 4+1 configuration—four rounds in the magazine plus one chambered—provides practical capacity for field work while maintaining the compact profile necessary for vehicle deployment or precision applications.

The 20-inch threaded barrel is the standout feature, machined to Proof Research's exacting standards for concentricity and bore uniformity that minimize velocity variation and improve shot-to-shot consistency. Threading to 1/2x28 specification enables direct attachment of .308 suppressors, muzzle devices, or brakes without adapters—a critical asset for noise reduction in training environments or tactical operations. At 10.4 pounds, the rifle strikes an intentional balance between recoil management and portability; the barrel's carbon-steel construction combined with the threaded design ensures durability under repeated suppressed fire and sustained fire strings common in precision rifle work.

This rifle is ideal for serious .308 shooters—law enforcement marksmen, long-range hunters, and 3-gun competitors—who prioritize accuracy at distance and the flexibility to add suppressors or other threaded accessories without gunsmithing. The Winchester action is well-supported by the aftermarket for stocks, triggers, and optic mounts, making this platform highly customizable for specific mission requirements. Compliance and installation are straightforward; the threaded barrel is factory-finished and ready for immediate suppressor attachment, while the five-round capacity meets most hunting regulations and practical shooting standards.