As an Amazon Associate, we earn from qualifying purchases. Amazon.com : Mossberg 500/590 Series Shotgun Picatinny Rail Mount : Sports & Outdoors Monstrum . B00ME8SZFS Attributes Brand name, Manufacturer name, ManufacturerMonstrum dataSourceamazonScraper moq, multiple1 MPN, SKUB00ME8SZFS qtyInStock0 snippetAmazon.com : Mossberg 500/590 Series Shotgun Picatinny Rail Mount : Sports & Outdoors Distributor offers SellerSKUMOQIn stockMultiplePrices AmazonSCB00ME8SZFS11