Hello, this is my first post and I'm hoping that someone can help me. I put together a AR-10 using a DPMS lower and the Fulton-armory Titan upper. The Free Floating Handguard came from Fulton-armory out of allignment. I decided to losen the hanguard Jam Nut and then straighten the handguard myself. Unfortunately the handguard and jam nut were put on with RED loc tite and in the process I've damaged the jam nut. I thought the YHM-9433 would fit but it's too small [ 2" vs the 2 1/4"]. I tried Brownells and Midway USA and they both said to contact the manufacturer. I tried Fulton armory and they would only sell me the entire handrail package (about $170). The support person said they didn't sell the jam nut seperately and they didn't know who the manufacturer was that made the handguard. I contacted Yankee Hill and this is what I got back. Sir, Thank you for your interest in our product. No, we do not have any jam nuts that will fit any .308. We do from time to time get contracts from both Fulton Armory and Bushmaster to manufacture forearms for .308's for both companies, however we do NOT offer and CANNOT offer any forearms or parts for sale. They are Bushmaster/Fulton Armory exclusives and available only through those companies. Sorry. Anyone got any Ideas on a Jam Nut that will fit on the titan 308 upper? Any help is appreciated. If not then any recommendations on a free floating handguard system that will sell the components seperatly. I can't believe that Fulton armory armorers don't make a mistake and mess up the jam nut from time to time.