Royal BM17 never available

From what I've seen, the Royal BM17 should be available from the beginning in Alaska...

On the map, no BM17. Went to the actual spot, no BM17. Completed all alaska contracts, still no BM17!!!

The thing is just not spawning and, because I can't discover it, I can't purchase it either!

Have you tried loading into co-op because I had the same problem it wouldn't show, but I went into co-op I was able to get it

If that doesn't work have a friend go to it on the map and if that doesn't work I don't know if there's a way of fixing it