I was unaware Derr sold those grip safety. While I am like Sugarfoot and do not have beefy hands. I love the way they look.Derr Precision makes a beautiful short beavertail grip safety. I have them on two of my 1911's. One full size Springfield, and one on a pre series 80 Light weight commander. I don't normally have beavertail grip safeties installed, but these keep the retro style look intact. I have loved the retro style since before it was a thing