; 682157948697 The Forward Controls ABC/R (Augmented Bolt Catch/Release) with its angled larger top paddle and lower paddle offer more surface area for better identification by feel and with a gloved hand. It is designed specifically for AR-15/M-16 receivers equipped with ambidextrous magazine releases. The ABC/R by Forward Controls addresses the difficulty with accessing the factory bolt catch's lower paddle with an ambidextrous magazine catch on the receiver.