Ed Brown 1911 Commander Threaded Barrel Features This barrel is manufactured using high-grade materials and advanced processes to ensure top-tier performance. The .45 ACP 1911 barrel is cut from T-416 modified stainless steel known for its purity strength and uniform structure. Precision broach rifling with a 1:16 left-hand twist provides excellent bullet stabilization and accuracy across a wide range of ammunition including lead projectiles. Durability and long-term performance are key aspects of this design. The barrel is stress-relieved heat-treated and sub-zero frozen to maximize strength and longevity. Oversized external dimensions enhance lockup and accuracy with minimal fitting while the threaded muzzle supports suppressor use when paired with a Nielsen device. Included components such as the link link pin bushing and thread protector provide a complete upgrade package. Ed Brown 1911 Commander Threaded Barrel Specifications Manufacturer: Ed Brown Model: 1911 Commander Threaded Barrel Caliber: .45 ACP Barrel Length: 4.25 Barrel Style: Threaded Thread Pattern: 0.578x28 RH Twist: 1:16 LH Material: T-416 Stainless Steel Finish: Stainless Compatibility: 1911 Commander Government Slides Included: Link Link Pin Bushing Thread Protector