I’m new to Glock’s. I mill and build all My weapons and l like a heavy weapon. I ain’t humping over there no more. Plus I don’t like any rubber or polymer in my weapons. Except recoil reduction parts. That’s just my preference. The sleeve doesn’t add that much weight all things considered. I appreciate all the remarks and will let you know how it works out. Pray for the troops, the generals and POTUS.