It took three days for delivery. I ended up installing it wrong and had a very difficult time removing it (if you buy this part, remember to remove the plastic at the bottom of the mag spring, otherwise you’ll have a very difficult time removing the +4 basepad).
The magazine was a 10-round mag that I converted to 12-round. With the +4 basepad, the gun now holds 16+1. I carried with it yesterday. Other than initial coldness of the metal against my skin, it wore well.
I also bought an 18-lb progressive recoil spring for my .45ACP Commander 1911, from BH Spring Solutions. I compared the old spring with the new and the old one is compressed a bit and also feels a bit lighter than 18-lb). Inside the 1911, the new spring offers noticeable resistance. I can’t wait to take the 1911 to the range. Sadly, I can’t right now, as I’ve some medical issues that currently block me from leaving the house (not Covid).
I’ll capture range footage of the 1911 once I’m healthy!