I just got a Defender II in .45 colt, 410 (3″) and it is a HOSS! This pistol is outstanding in every respect. The first shot was a definite thumper but easy to handle when you know it is coming. I have fired 100 rounds of both caliber sand the pistol has performed excellently. So I have ordered another barrel in a different caliber and will be getting more. I LOVE THIS PISTOL!!!