Congratulations on acquiring a great little pistol. You might want to consider putting a set of Hogue grips on it. That really worked well for me. You should have a very reliable pistol. I've got over 7,000 rds through mine, mostly my 115g ball reloads, but a considerable cross-section of JHP as well, and I've had only one sorta jam. That occurred when one of my lead ball reloads hung on the feed ramp, but went in when I slapped the bottom of the magazine. Other than that, total reliability. Near as I can tell, the only significant advantage the Shield has over the 3913 is weight. True, it's a tad smaller, but not enough to make a difference.