A firearm frame designed for the classic 1911 pistol platform, configured to accept a high-capacity, double-column magazine, and unfinished to approximately 80% completion, requiring further machining by the end user. This configuration typically allows for customization and personalization beyond factory-produced firearms. A common example involves modifying the grip to accommodate the wider double-stack magazine.
The appeal of such a configuration lies in the blend of traditional 1911 ergonomics with increased ammunition capacity. Historically, the 1911 platform has been limited by its single-stack magazine design. The ability to nearly double the ammunition capacity while retaining the familiar handling characteristics offers a significant advantage. Furthermore, the unfinished nature of the frame offers a degree of flexibility for hobbyists and enthusiasts to tailor the final product to their specific needs and preferences.