Well in a turn of events, having a long LOP has helped you out then with the HS3

We used to offer a long LOP for the Skeleton Carbine stock too, but all of that is getting re-worked on our end right now due to some cool stuff we've got in the works!
The HS3 spigot does come up occasionally and it would be a relatively easy piece to machine if you have your own shop, or to modify the KRG one for that matter.
Out of curiosity more than anything else, why the HS3 over something like the LSS-XL Gen2? The XL is a little cheaper and you could also use your MagPul PRS on it. Not trying to sway your decision, I'd just be interested to know why you are drawn to the HS3.