Awesome. Please keep it coming with the updates..how much does a standard glock 19 front sight go for? I found something very interesting regarding the rear sights on a sigma..I've never heard anyone mention this on this forum so I don't know if this is something new or something so old its rare but I was searching around on ebay and saw someone had pachmayer fully adjustable rear sights specifically for the Sigma. In the picture they were still in the package but it looked like it could have been an older package..anyways I thought it was interesting. If your poi is a little too high something like this may be what you need to dial it in..I'm excited to see what aftermarket parts start coming out for the SD40 that we can use in our Sigmas..I wonder if the front sights will be compatible..