I just saw this on PSA. It's MOE, but is it build on solid parts? Price is crazy low.
PA-15 MOE QMS Carbine Package - Palmetto State Armory - Rifles - Firearms
The only thing that may or may not be an issue (preference) is that it didn't mention if it's an M16 bolt so it's safe to assume it's just an AR15 bolt.
So the parts have a greater life expectancy, the first thing I would do is swap the buffer for an H2. With this you also get the added benefits of less felt recoil and less feeding issues with sub par ammo.