My G19.4 carry gun I run with a grip force adapter. I recently traded a G36 I wasn’t using for a second G19.4 made in 2020 that had less than 50 rounds through it. GFA’s were sold out all over so I first tried cutting down the beaver tail back strap. That didn’t work for my hand, it’s just shaped differently. So I tried this and it’s working great for me. Shoot this one about the same as my old one. For me the G19 hump gives me tennis elbo type pain if I shoot it in standard configuration for long. Not my best shooting on the target but the sights are centered.