My p10 was manufactured in 2016, test fired 1/28 this year. Backplate is tight, is not beveled, striker does not rotate unless forced. #is C154...Trigger is lighter than when new after 550 rounds. It's very accurate. However, it bites, even after rounding the bottom edge and assuring the bottom of the dongle is flush with the face of the trigger shoe. Once a trigger comes out that assures a cure, I'll replace the original and file on it till it's fixed or ruined. Have a 75b and an 83 in 9X18.