Home / Shotgun / Mossberg 500 12/20 3″ MOOB ADJ STOCK You cannot add "TriStar Sporting Arms COBRA III PUMP 20/28 SYN 3"" to the cart because the product is out of stock. Sale! Mossberg 500 12/20 3″ MOOB ADJ STOCK$77280 $65739 Out of stock SKU: 53265 Category: Shotgun Product ID: 57009 Description Description Vent RibPistol GripForend With Strap Related products Sale! Winchester SX4 UNIVERSAL 12/26 MODNA 3.5 $1,16999 $1,07098 Sale! Savage Arms RENEGAUGE TURKEY 12/24 MOOB $1,34900 $1,22915 Sale! Browning MAXUS II WW VTAN 12/28 3.5″ $2,24999 $1,98843 Sale! Winchester SX4 WATERFOWL 12/28 WDLND 3.5# $1,16999 $95047