GG&G, Inc. 5 Shot Side Saddle, Fits Mossberg Shockwave, Holds 12 Gauge Ammunition, Angle Facilitates Easy Bottom Loading of the Magazine Tube and Top Loading of the Chamber, Black Finish GGG-2001 The GG&G Mossberg Shockwave Side Saddle Shell Holder (Five Shot) provides quick access to your ammunition at an angle that matches your hand. Manufactured specifically for the 12ga Shockwave.