Dennis The B
US Veteran
I didn't need any adapter other than the ones included with the pistol. I believe I used the #5 and everything screwed down perfectly. Order it without the picatinny rail.Wow, I was just about to ask the same.
Also given that a separate adapter is required to mount it to the CORE, How/where do I find that adapter? Do they come individually or as a set?
Ready to order tonight if I can find out.
I've had the Fastfire III on my CORE for about a month now, and I've had zero problems. Hits exactly to point of aim.
PS - My CORE is a .40 S&W that I converted to 9mm with a Storm Lake barrel. Didn't even need to change the zero. I have almost 1k rounds in both calibers since I bought it.