First, the bad news. I had a bad G30SF. The pistol spit brass in my face and failed to return to battery. The failures occurred for everyone who shot the pistol. I sent it to Glock, they replaced the RSA and some (or all) of the trigger group, and sent it back to me. I still had the same problems with the pistol, so I sent it back to Glock. They're sending me a replacement. Thank you, Glock.