Just picked up my new 31 OD last Saturday. Lubed it and ran 14 rounds of Georgia Arms canned heat through it. I know it's only a few rounds, but it shoots great. This is my first 4.5" Glock. I have owned all the other sizes but this one. Now that I have it, I really like this gun. It's probably going to become my primary carry gun. Also have a G35 to pick up at my dealers. Already have a KKM 357 SIG barrel for it. Probably won't even fire it before I replace the .40 barrel with the KKM. Am becoming a 357 SIG nut?