The MOE M-LOK Forend – Mossberg 590/590A1 is a drop in replacement forend for the Mossberg 590/590A1 12 gauge shotguns, featuring an extended length and front/rear hand stops for improved weapon manipulations. Featuring M-LOK slots, it is compatible with all M-LOK accessories. This forend adds modularity to the proven Mossberg platform for sporting use, home defense or duty and is part of the M-LOK product line from Magpul Industries. The MOE Forend for Mossberg is a simple, lightweight forend for the Mossberg 500/590/590A1 lines of 12 gauge shotguns with the 7-5/8" action tube assemblies - it will NOT fit the Mossberg 500 shotguns with 6-1/2" action tube assemblies or the Maverick and current production Mossberg 500 synthetics with pinned-in action tube assembly without replacing with the 7-5/8" assembly (631-000-023). It is designed to provide much needed adaptability with the attachments of optional M-LOK accessories and mounts.