My gun club purchased 4 RR match uppers for promoting our junior marksmanship programs, outstanding shooters. About 1 MOA barrels with the typical 69 or 77 gr match ammo shooting benchrest.
https://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_ID=156
https://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_ID=156