Ed Brown Products Barrel Bushing 1911 Oversized Gunsmith Fit Blue. This barrel busing is oversize for gunsmith fit. Available in blue and stainless. Specs: Heat treated alloy and stainless steel. Oversize: .575 ID .705 OD. Specifications for Ed Brown Products 1911 Oversized Barrel Bushing: Manufacturer: Ed Brown Products Gun Model: 1911 Additional Features: Gunsmith Package Contents: Ed Brown Products 1911 Oversized Barrel Bushing What firearm models does the manufacturer say Ed Brown Products 1911 Oversized Barrel Bushing is compatible with? The manufacturer says that Ed Brown Products 1911 Oversized Barrel Bushing is compatible with 1911Ed Brown Products 832-M: Barrel Bushing 1911 Oversized Gunsmith Fit Blue