Black Aces Tactical is proud to present the only Mossberg Shockwave Quad Rail and Side Shell Holder combination in existence! This Quad Rail/Side Shell holder combo is the perfect accessory for your Mossberg Shockwave. Here are the headlines! RB7SH Quad Rail: 6061 T6 Aluminum 10oz weight 1913 Picatinny top rail with forward quad rails MIL-A-8625 Type II anodized Secure lock clamp system All hardware and tools included Side Shell Holder: 6061 T6 backplate ATI shell holder portion 5 shell capacity The ONLY Side Shell holder that works in conjunction with the BAT Mossberg Shockwave Quad Rail Shockwave Quad Rail is only compatible with the pump action Mossberg tube fed version of the weapon. Not the magazine fed version manufactured by Black Aces Tactical ***For Mossberg California compliant Shockwaves, this item number will not fit. You will need either the RB7M or RB7Slim models. The furniture is different on those models*** *Mossberg Shockwave and Ammunition not included.*