http://www.mississippiautoarms.com/saig ... p-369.html
Must be used in a 922r Compliant Shotgun:
The Saiga Shotgun out of the box is not compliant with high capacity magazines. For 922r compliance parts, you must bring the foreign parts count down to ten or less with use of a magazine in excess of 5 rounds on a Saiga 12 gauge shotgun