For an in-depth review of the 30S, check this out.
“What is this little beast? It is a project gun, of sorts. For those who speak Glock, the 30S is a Glock 30 SF frame with a Glock 36 slide. The externals are Gen 3 in appearance, but the recoil system inside belongs to the Gen 4 line-up. The double stack magazine is fat, but not impossible to hold. It is short, but there is room for all of your fingers.
“The sights are standard Glock fixed sights. Because the gun is meant to be concealed, it has had some of the corners rounded over a bit. The barrel is 3.78 inches of the overall length of 6.8 inches. It’s 4.76 inches tall and 1.28 inches wide. It weighs in at 20 ounces.”
Here’s hickok45’s first Glock 30S video: