DYTAC SLR Licensed Functional Magazine Extension for Gas Blowback Airsoft Pistol Magazines (Model: EMG BLU-C)

"I LOVE THESE EXTENSIONS. I have it installed on my 19 gen 3 and it honestly works better with the extension installed than without. I get more gas, bb capacity, and it looks pretty sick. I have gotten the 17 extensions and I kept getting leaks. I didn't actually try to fix it but all I can say that these are a must have if you run a 19.