A magazine well extension for a firearm having a magazine well in a lower receiver, the magazine well extension including a substantially hollow body including a magazine well extension portion, for covering and extending beyond an opening of the magazine well of the firearm, the magazine well extension portion being adapted and configured to guide a magazine into the magazine well of the firearm and coupling elements for coupling the body about the lower receiver of the firearm. The inner surface of the body is contoured to conform to the outer surface of the lower receiver, and the body is shaped as a grip, for use as a fore grip on the firearm.