This Mossberg 990 AfterShock™ SBA5 Brace Kit comes as a complete kit that’s ready to assemble and includes everything you need. This kit fits all Mossberg 990 12GA variants. Features SB Tactical® SBA5™ Brace Outlast Development Group 990 AfterShock Adapter ERGO Flat Top SUREGRIP® Castle nut Mil-Spec Carbine Receiver extension All required mounting hardware A word from the lawyers: All NFA rules apply. This product is designed and intended only for use as a forearm brace to provide a more stable firearm platform. It is neither designed nor intended to be fired from the shoulder. As configuration changes may alter the classification of a particular firearm, the user bears sole responsibility for determining the correct application of state and federal law.
