Max, made in Austria. Models with the 'P' prefix are made in Austria. Have a great day!

GLOCK PART 4. Identification of Austrian or American made pistols is quite easy. As previously stated the only components manufactured in the US are the frame, barrel and slide. The rest of the components come from Austria.
On the frame of an American made pistol, the right side will say "MADE IN USA, GLOCK INC SMYRNA GA". In front of the slide lock you will see the Georgia proof mark which is the shape of the state of Georgia with a P in the center.
On the slide of an American made pistol has on the right side behind the extractor the Georgia proof mark. On the left side it will be marked US instead of AUSTRIA.
The barrel will be marked differently as well. The American pistols will not have the 5 sided proof mark from Austria but a football shaped proof mark with 3D in the center. Also on top of the barrel hood you will find the Georgia proof mark and it was say US. I hope this Glock history lesson answers all you would want to know about Glock.

GLOCK PART 3 The pistols are inspected before and again after test firing. The fixture is fully automated. The pistol with the loaded magazine and slide open are dropped into a fixture. The fixture is closed, securing the firearm. The tester pulls the slide to the rear to chamber a round. Now a bullet proof clear door closes protecting the tester. The tester pushes a button and the pistol shoots all ammo to lock back. Every pistol does this process. Additionally torture testing can be done this way as well. The pistols are tested for accuracy and sight alignment during this process. The range used is 25 meters. The testing facility is top of the line with constant air circulation and filtration system.

Glock USA is housed in several buildings on Highlands Parkway in Smyrna, Georgia. The headquarters at 6000 Highlands Parkway is the original facility that was bought by Mr. Glock in the early 80's. Originally, it was set up to assemble and test fire pistols and to distribute. In fact the operation was quite small at that time and he leased parts of the building out to other companies. As production grew, and when the tenants contracts were up, Glock would expand until the building was full. Today the original building is mostly administrative. The manufacturing facility is right behind the original building. Down the road you have Glock Professional which is the training facility. Here there is a state of the art range and classroom for armorer and operator classes.

Glock PART2. The US hammer forge barrel machines also come from Austria. The mold machines manufacture both frames as well as the polymer Glock gun cases the pistols are received in. Those cases would be too expensive and bulky to ship from Austria. To assure ability to produce without interruption, Glock USA keeps one year worth of production materials (steel, polymer manufacturing materials and so on) on hand.
The guns production capacity of US made guns were up to 10,000 per week (3 shifts running 7 days a week). The Austrian made guns come disassembled and are assembled and test fired in the US facility. Glock USA has about 25% of the production capability as the Austrian plant. The American facility employs over 400 people. As of December of 2017, The American Glock plant is running at 65% capacity with their most popular model being the Glock 19.

In Austria, Glock has two different facilities, one deals with metal components and the other deals with the polymer components. All research and development are conducted in Austria. There is no model shop in the USA facility. All Glock models can be manufactured in the USA facility. But 100% of the G42 (380 Auto) pistols are made in the US due to ATF import regulations. The 380 Auto caliber Glock pistols do not meet the importation points to be imported into the US.
The test firing procedures at Glock USA is quite interesting. Each pistol is tested with 2 proof cartridges and 5 standard cartridges.

Throughout the market we are seeing Glock pistols manufactured in both the United States, as well as, Austria. Of course, that presents a question many ask themselves, is one better than the other? How do you determine whether your pistol is made in Austria or the US? We will take a look at both of these questions. The answer in quality difference between the two is quite simple. Absolutely nothing! There are many reasons for this. The Glock USA pistols have American made frame, slide and barrel. The rest of the components come from Austria. All materials for manufacturing the frame, slide and barrels come from Austria and shipped to the US facility. There are no material procurements in the US. Glock Austria keeps 100% quality control of every aspect of production.
Another interesting note, Glock manufactures in-house every single component of the pistol down to springs and pins. All tooling, molds, fixtures, gauging, etc is manufactured in-house in Austria. This allows Glock a unique opportunity most US manufacturers do not exercise. Most US gun manufacturers manufacture certain components in-house but subcontract out others. They may also send parts outside to get heat treated, finish or any other coatings. Whereas, Glock has 100% control.
As far as process in manufacturing in the US, it is absolutely identical. All CNC machines come from Austria and have been programmed by the same people who do it in Austria. Even the concrete floors in the US are the same.

Model# starting with a P is Austria, like this one. Ones starting with U are USA made. Hope this helps.

Max, Austria because of the P - Model Number. A U - Model number would be Made in the USA. Cheers and stay safe!

The model number on this one is "PA195S203"
And is made in Austria

Yes also Austria, P prefix model numbers are Austria while US models start with a U.