V Seven Extended Mag Catch Button Black. This button along with the rest of the V7 Mag Catch Kit ensures that you're getting the most out of your AR. The back side of the button has the longest slap test possible providing greater tactile feedback which allows for quicker draws and faster unloads. The button is reversible so you can use it on the opposite side of your mag catch for the same effect. This allows you to keep the button on your gun when you want or use the button on the opposite side when you want. This ensures that you get the same function from your gun regardless of which way the button is pushed. Specifications for V Seven Extended Mag Catch Button: Manufacturer: V Seven Gun Make: AR Platform Gun Model: Universal Finish: Black Gun Type: Rifle Features: Constructed From 7075 T6 Aluminum Included Accessories: 1 Standard Button 1 Extended Button & 2 Torx Screws Package Contents: V Seven Extended Mag Catch Button What firearm models does the manufacturer say V Seven Extended Mag Catch Button is compatible with? The manufacturer says that V Seven Extended Mag Catch Button is compatible with UniversalV Seven EXT-MCB: Extended Mag Catch Button Black