I just got my SA139-O in the mail, they are Shield specific. I am noticing the tritium vile in the front sight is high, there is more orange in the bottom than the top. If anyone is looking I purchased mine off Amazon. I think they had 4 left in stock.
I have a set of these on my M&P, it was a great choice in my opinion, the sight picture was less distracting because all focus is directed towards he front sight if makes sense.
I just got my SA139-O in the mail, they are Shield specific. I am noticing the tritium vile in the front sight is high, there is more orange in the bottom than the top. If anyone is looking I purchased mine off Amazon. I think they had 4 left in stock.
Which brand are you referring to when you say "SA139-0"?
Ameriglo? Trijicon?
I went with the Tru Glo TFO's. With the Tritium, you ddon't have to worry about hitting your night sights with a flashlight. Pull your pistol out of darkness and the sights are Always glowing!