The 3-9 is one of their older models.
FWIW
I have four Burris 3-12 LER's (all with AO's/PA's) on specialty handguns:
6.5-284(muzzle brake), 284 Win(Mag-Na-Port), 250 Sav AI, and 7.82 Patriot (tad larger than the 300 WSM and it has a brake too). I did have one of the older 2.5-7's fail me on a 338 WM Encore barrel years ago, but I also had a fixed 4x power Leupold fail me on that barrel. On one of my 3-12's had a 2-7 B.P. reticle in it by accident.
Now I could say, "Since that scope(s) failed me I will never buy another Leupold or Burris from now on."
Fact is, the only scopes I use on my SP's are 3-12 Burris LER's, Burris rifle scopes and Leupold Rifle scopes.
All companies are going to have problems now and again (production) & to top it off customer service may miss something too when you send it in. I choose not to "throw the baby out with the bath water."
For hunting my hands down choice is Burris.
This is not to say the other handgun scopes are not good, as there is a lot of good choices for handgunners.