Pistol Magwells are designed to allow for faster reloading of the semi-auto by giving you a bigger opening that is flared and beveled to guide the magazine home. Is almost like, if you get close enough the magazine will just find its way in on its own. Most can be easily removed, depending on how they were installed.
I received something other than what I ordered and paid for. Instead of the Sotac Micro 3x, I received a Swamp Deer G43. The promise to return the difference has not been fulfilled so far.