BudsGunShop.com - Difference between the UI and PI prefix to model #

Mark, the U models are made in USA, the P models are made in Austria. Have a great day!

Mark, U = made in USA and P = made in Austria. There is *ZERO* difference in build quality between the two. Cheers and stay safe!

Mark, the only difference is where it was manufactured. Glock model numbers starting with a U were made in the USA, model numbers starting with a P were made in Austria. Hope this helps

It denotes the place of manufacture, no real difference other than the country stamped on the slide. P for Austria, U for USA made.