"Are you ready? Okay. Let's roll."- Last words of Todd Beamer
Nothing against PRI, but also consider Centurion Arms. Monty is a former SEAL sniper with pretty extensive history in weapons development and I believe is the current sole source supplier for Crane's SPR/Recce barrels. Other people sell Douglas barrels, but as I understand it nobody sells the actual SPR/Recce spec.
He and his wife Corrie run the shop, they're an absolute pleasure to deal with.
"Are you ready? Okay. Let's roll."- Last words of Todd Beamer
The SPR format really lends itself to holds over dialing although the latter can obviously be done if necessary. I personally think the Horus type reticles work really well in an SPR. Also a 50mm objective or so fits a standard AR height over bore ( and most one-piece mounts) so IMO there's no reason not to go with a smaller objective unless weight is a driving factor.