This Mossberg 590 SBA3 Brace Kit comes as a complete kit that’s ready to assemble and includes everything you need. This kit fits all Mossberg 500/590/590A1 12GA/20GA or .410 receivers. Features SB Tactical® SBA3™ Brace ERGO Mossberg 590 adapter for 12GA and 20GA Models ERGO Flat Top SUREGRIP® Castle nut SB Tactical® Carbine receiver extension All required mounting hardware Are pistol braces legal? ATF’s current position is unclear on smooth bore firearms. During Shot Show, we are aware that ATF informed companies that they are using enforcement discretion to not pursue stabilizing brace enforcement actions. However, we recommend consulting with an attorney before making any decisions. For an update on the ATF Pistol Brace Rule check here. A word from the lawyers: 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.
