Civilian Tactical Weapons is providing this article to compare the Glock models versus the Walther P99. As always, the video components are listed in the article. Please click the READ MORE link below to read the complete article.
Glock vs. Walther P99
by Jessie Indracusin
INTRODUCTION
First off, I want to say both firearms are superior designs. If you decide on one over the other, you are getting a 
solid firearm either way. Both guns/manufacturers are know for exceptional innovations in their firearms. Please note, that for purposes of this article, we will be covering the respective firearm regardless of caliber. So although I have a 9mmP Glock 19 used in the article and comparing it to the Walther P99 in a .40 S&W, we can pretend that the Glock is a .40 S&W and the Walther a 9mmP if your selection decisions is comparing two 9mmP or two .40 cal S&W.
These guns are both proven, since neither are a 1st generation model. As far as the two companies are concerned, Walther has been making firearms since 1886. Glock has been a proven firearm manufacturer since the 1970s.
WALTHER P99
Since the origins of Walther firearms back in 1886, they have provided revolutionary designs for years. The first Single Action/Double Action trigger system came from Walther in 1929. If you go back to World War Two, many
Allied soldiers have been on the receiving end of the infamous Walther P38 Luger. The Walther P38 Luger was pretty much the first widely deployed 9mm pistol. The Walther P99 (Named "99" because of the year it first came out, 1999) has taken various forms. The one used here for the article is one of the original model Walther P99. The newer model is referred to as a Walther P99 AS if you want a Single Action/Double Action.
The adjustable back strap on the gun is a welcome, allowing the user to adjust the gun to fit his hand versus trying to adjust his grip to fit the gun. In Single Action mode, the trigger pull is VERY light and easy to get rounds on target.
The newer models (not the original one pictured here) have a universal attachment rail allowing laser sights/flash lights to be attached to the bottom of the gun. This was a welcome change in the design.
This Walther P99 I own, I have put about 5,000 rounds through, without any jams occuring. My selection of ammo has been very wide, since I have shot many reloads through the gun too. I have no replaced a single component in this gun and have shot it as recently as a month ago. Men and Women both love shooting this gun and it feels nice in the hands.
The list price of a Walther P99 AS is $799.00 but you can acquire these as low as $550-$599 in certain States at gunshows. I consider a good deal on this gun as being NIB (New In Box) of $599 to $699. With the Firearms's industry's number one Sales Man these day being Obama, the mad rush to buy anything that expels a bullet these days have caused this gun to move closer to MSRP when they are sold.
GLOCK
Glock comes in nearly every round you can imagine. As far as being a diverse platform, there is no other 
manufacturer (at least widely adopted manufacturer) that provides you with so many options for ammunition options from a single design. The size options you have with Glock is significant (refer to my webcast on Glock Sizes for more details on this).
Starting in the 1980s, the adoption of the Glock with Law Enforcement (Local, State and Federal) makes this the most easily recognized semi-automatic gun. Most non-gun people can recognize a Glock. Glock has pretty much taken such a huge chunk of the Law Enforcement business that Beretta has nearly disappeared in Law Enforcement.
Known with the catch phrase of "Safe Action", this gun is technically neither a Single Action or Double Action gun (refer to webcast about SA/DA Differences).
The other thing to note about Glock is there are more accessories, options, parts for Glock over any other handgun out there. Anyone who makes an accessory, holster, light, etc. will start with Glock and expand to other solutions. There are also Glock specific accessories, like internal lasers, that are not even available on most other guns.
Glock is also known for reliablity. There was a magazine I read back in the 1980s about Glock that they tried everything to jam the gun. These included using the guns in the coldest temperatures (nearly freezing the gun in a block of ice) and then using the same gun by sticking the gun in extreme heats, well above any temperature found in the environment and almost to a melting point. The gun functioned flawlessly after putting it under so much stress. Some people refer to the Glock as the Uzi of pistols for it's extreme durability.
Glock was also the industries first production polymer gun. Glock took a lot of flak initially for making a "plastic" gun and everyone thought you couldn't have gun made out a majority of plastic and still operate under combat situations. If you look at how the landscape has changed since then, nearly all guns are more plastic than metal these days.
CONCLUSION
So what should a person get as a first gun then? My vote goes to Glock (marginally, but I would still recommend it). They breakdown nearly identically, both nearly as reliable, both are very accurate, so why do I go with a Glock over a Walther? At the end of the day, with how many Glocks that are sold, the ease of being able to buy parts anywhere and how many gun smiths that are experts in it, this may be a better bet for newer gun owners. Also the amount of third party accessories you can get, makes the Glock have a slight advantage.