The standard mainspring housing includes a precision-machined slot and a bottom hole that's drilled and tapped, supporting an advanced two-piece design. This design facilitates easy drop-in installation and swift removal of the magwell without needing to take apart the pistol. It widens the magwell opening for efficient reloads, with no grip modification needed. Internal parts are not included but can be purchased separately. The Ed Brown 1911 Magwell housing offers a robust and lightweight enhancement, facilitating quicker and more efficient reloads