I have used ati benelli m4 raven collapsible stock for the benelli m4. I don't know if it will fit others.has all the tools and bolts for install. Has some wear and tear on it from use. This item has been discontinued. Looking to trade for eotech g45 plus cash on my end. Surefire x300 or anything else let me know what you have. Price is 200 cash or 300 trade value.