Flexible, versatile and virtually limitless for fit, style and application. Wouldn’t everyone want a gun that is flexible enough to fit that description? That’s the way that Mossberg described their ground-breaking FLEX Series of modular shotguns and accessories in 2012. With the innovative system of TLS™ (Tool-less Locking System) connectors and FLEX accessories (stocks, recoil pads and forends), 500 FLEX and 590 FLEX shotguns could easily be converted in seconds from a rugged tactical platform to a foul-weather hunting gun — without the need for tools. Now Mossberg is revolutionizing the modular shotgun concept again with the introduction of FLEX Conversion Kits for your Mossberg 500 and Maverick 88 pump-action shotguns in 12 and 20 gauge options. Three conversion kits are available for each gauge with all required hardware included.

The flexibility and versatility of the FLEX System, designed to give shotgunners an easy and quick way to adapt their shotgun to a variety of shooting applications, can now be added to existing 500/88 pump-actions with your choice of the following kits in 12 and 20 gauge.

  • Stock and Forend Adapter Kits – includes the FLEX TLS stock and forend adapters only, but provides the option to switch to FLEX accessory stocks, recoil pads and forends on your Mossberg 500 and Maverick 88 shotguns.
  • Stock Adapter with FLEX Pistol Grip Kit – includes the FLEX TLS stock adapter and Mossberg’s FLEX Pistol Grip with convenient sling swivel stud and black matte finish. Easily convert your 500/88 to a Mossberg Cruiser platform for home defense applications.
  • Stock Adapter Kit – includes the FLEX TLS stock adapter only. This kit will allow your 500/88 to accept FLEX stocks and pistol grip for LOP (length-of-pull) customization or ease of converting your hunting shotgun to tactical platform.

With 16 FLEX accessory components and Mossberg’s extensive line of 500 accessory barrels (compatible with Maverick 88 shotguns as well), the options for your pump-action shotgun are endless. FLEX System accessories include three recoil pads (3/4-inch, 1 ¼-inches and 1 ½-inches thick); four synthetic forends (three standard and one tactical tri-rail); and nine stock options. Choose from standard full-length stocks with 12 ½, 13 ½ and 14 ¼-inch LOPs; pistol grip; six-position adjustable tactical stock; and four-position adjustable, dual-comb hunting stock. Forends and stocks feature black matte, Mossy Oak® Break-Up® Infinity or Realtree MAX-4 finishes.