Speedfeed Mossberg I Magazine Stock (500/590 12 gauge)
Designed for Law Enforcement - Ideal for Sportsmen the SPEEDFEED I stock has two magazine tubes(storing a total of four rounds) molded into the stock. Each magazine tube (holding two shells) exits just behind the pistol grip, one on each side of the stock. A steel spring in each tube holds the rounds in the magazine until they're needed and then with a flick of the finger, shells are instantly available for loading.