seen alot of questions about scope mounts. I had the 3rd gen Springfield (aluminum) mount. I had another mount i bought out of shotgun news (steal) which was better than the spingfield it wasnt even a brand name is was like TSA or something. and now i have settled with the ARMS mount. the Arms mount is awesome. I have 3 different scopes I can put on this thing and take them off and they all hold zero. (tried it at the range swapped out 6 times just to make sure). it is rock solid. The aimpoint i use usually sits in the safe until hunting season rolls around. and this year i took it to the range and fire 2 shots to check zero and it was there. the Arms rings and mounts are excellent. the best feature is that if you want to use iron sites you cant even see the mount. its like it aint even there. if anyone looking to scope thier m1a out this is the platform you want to go with. cant swing the Arms? just as long as it is steal and not aluminum you will have a solid base.