Ed Brown mainspring housings are expertly crafted from solid bar stock steel, offering exceptional durability and precision without relying on inferior castings or plastic parts. They come in a variety of surface treatments to match your aesthetic and functional needs, including smooth, serrated, checkered, Snakeskin, Chainlink I and Chainlink III patterns. The government model housing is designed for easy drop-in installation on all full-size 1911 pistols, such as the Para-Ordnance P-14 and P-16. These housings are adaptable and compatible with any finish or steel type, including aluminum, allowing for extensive customization. Note that internals are not included but can be purchased separately to complete your setup.