Whether you're responding to a suspicious bump in the night or clearing a dark building as part of your job, GG&G's Mossberg Shockwave Flashlight Mount lets you put some light on the situation. This fully ambidextrous mount attaches to either side of the Shockwave's magazine tube - and its on-board Picatinny rail can be positioned forward or rearward for added flexibility. Installs easily in a few minutes Made of AS-35 Geneva Steel & machined 6061 T6 billet aluminum 1-3/4" long Picatinny accessory rail Fits 12 gauge Mossberg Shockwave ONLY; will not fit 20 gauge Shockwave The GG&G Mossberg Shockwave Flashlight Mount has be Mfg: Gg&G