You can’t deny that the Mossberg 500/590 series of shotguns are popular for both tactical as well as recreational pursuits. At SHOT Show 2012, Mossberg unveiled their new flex system that allows 11 models of shotguns to interchange furniture. This allows the shooter to configure his shotgun for a variety of uses.
The key to the system is the Tool-less Locking System which consists of a series of three connectors to quickly swap out stocks, forends and recoil pads.
Both of these configurations are the same shotgun and the changes were made in less than a minute.
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