Why didn’t anyone tell me what a PITA the install was! I’ve done my 220, 229, 226 in a few minutes each. The P239, as a single stack, had such little room for placement. 1 hour in and I decided to wrap a twist tie around one of the opening pieces in the sear and worked it into place. Only 1.5 hours of quality time with my new firearm. Dry fired with a snap cap and it cycle fine. Rant out.