Ed Brown 1911 Government slide for full-size 1911 pistols chambered in .45 ACP. Sized for a 5" Government-length barrel - the standard full-size 1911 configuration. Stainless steel construction with a Trijicon RMR optic cut machined into the top of the slide. Specs Brand: Ed Brown Products Manufacturer Part Number: 087000108 Configuration: 1911 Government slide Barrel length: 5" (full-size Government) Caliber: .45 ACP Material: stainless steel Optic cut: Trijicon RMR footprint Fitment Full-size Government 1911 frames in .45 ACP 5" barrel only - NOT compatible with 4.25" Commander or 3.5" Officer-length builds Verify your existing 1911 frame is Government / full-size before ordering Required separately (NOT included) 5" Government 1911 barrel chambered in .45 ACP 1911 slide internals (firing pin, extractor, plunger tube, sear) Sights (front + rear) Recoil spring assembly for 1911 Government-length builds