Out of stock
Mossberg FLEX 500 All Purpose 12 Gauge Pump-Action Shotgun, Black - 50121
Out of stock

Mossberg FLEX 500 All Purpose 12 Gauge Pump-Action Shotgun, Black - 50121

SKU 38321
Brand Mossberg
Model Number 50121
UPC 015813501217
Customers must read Compliance Information before purchasing.
This product is fulfilled by a PSA Partner and shipping times may vary.

Product Details


  • Series/Collection: FLEX 500 All Purpose
  • Action: Pump
  • Stock Type: Fixed
  • Magazine Capacity: 5+1
  • Caliber/Gauge: 12 Ga
  • Sight: Dual Bead
  • Receiver Material: Steel
  • Stock Material: Synthetic
  • Barrel Finish: Matte Blue
  • Receiver Finish: Blue
  • Stock Finish: Black
  • Barrel Length: 28"
  • Chamber Length: 3"
  • Length of Pull: 14-1/4"
  • Overall Length: 48-1/4"
  • Weight: 7.5 lb
  • Barrel Type: Vent Rib
  • Safety: Manual
  • Chokes: Accu-Set


The Mossberg 500 Flex is America's favorite pump-action shotgun. The 500 Flex is coupled with the innovative Flex TLS tool-less locking system which makes for the most adaptable shotgun platform in the world. The 500 FLex also allows the user to easily switch between multiple shooting applications in second and without tools. 


  • Legendary 500 pump-action dependability
  • Dual extractors, positive steel-to-steel lockup, twin action bars and an anti-jam elevator for smooth operation
  • The quick-change adaptability of the FLEX TLS system components
  • A diverse group of available hunting and tactical accessories including stocks/grips, forends and recoil pads
  • All FLEX combos come with a FLEX embroidered soft case, custom designed to fit all your FLEX shotgun components, with outer/inner compartments and two zippered barrel sleeves
  • The heart of the FLEX system is the series of three patented TLS Tool-less locking system connectors that allow shooters a simple method of switching stocks/grips, forends and recoil pads for a variety of shooting applications
  • TLS components have been designed to be removed and remounted in seconds - without tools


Q & A


All NFA Rules Apply.
These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.
Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).