The Armaspec Rhino R-23 Tactical Magwell Grip and Funnel was designed to significantly improve magazine reload speed and firearm handling. The Rhin? reduces magazines change times on average by 48% and without ever having to take your eyes off your target and gives you full control of the weapon whether in CQB or malfunction situations. Made from reinforced polymer and attaches to any standard AR15/M4 lower receivers without any permanent modification to the weapon. Made in the USA.