So, I just got a package from the UPS guy and it was my WE Tech G17 with a tan Generation 4 body. Since I own a Glock 22 4th Gen and nobody else on the airsoft market makes a 4th Generation lower for the Glocks, at least not that I can find, I decided to go with the WE Tech. I owned a WE Tech Glock around the time they first came out and I wasn't that impressed with it. It felt cheap, didn't shoot too well and I just didn't really like it. I ordered this Glock from WE because I planned to use it just as a training tool for shooting and feeling comfortable with the odd Gen 4 lower that my Glock 22 sports. I Don't know if I got a lemon the first time I owned a WE Glock or if they have improved upon the Glock since they first released it but I am impressed with this new one.
I just took it out to shoot in the backyard and with one fill of propane I was able to go through four (4) magazines and three shots on the 5th magazine which is a total of 111 shots. Even my KWA ATP and I believe it's a KSC Glock 18 don't even get that many shots with one fill of propane. The plastic/polymer lower feel way better than the KWA and KSC lowers that I have held and a lot better than the Tokyo Marui lowers as well. The slide is a grayish color unlike the first WE I had which had more of a black color. Unfortunately, WE changed the dimensions a bit so it doesn't fit in any kydex or molded Glock 17/22 holster but rather fits in holsters made for the Glock 21. That's not a big deal if you have holsters laying around for a Glock 21 but if you don't, like me, then you might need to buy one if you plan on even using a holster.
I haven't taken it apart and looked at the internals except to adjust the hop up so I can shoot straight with a .28 and from past experience with my other WE Glock, this hop up wheel is a major improvement. The first WE Glock I had wouldn't even hop .25's and I was having a heck of a problem even keeping the wheel in place to hop .23's. This wheel stays in place and even adjusts to hop BB's heavier than .28's. I did notice that the inner barrel is a blue aluminum barrel which is different than the first one I had. From just fondling and shooting those 4-5 Magazines I can already tell the build quality of the externals are way better than the first Glock I had. I don't know much about internals but from the way it shot and how the hop up has improved I can only assume they improved the internals as well.
As I shoot this gun more and more I will come back to this thread and update it with anything that happens to the gun. I don't plan on upgrading it or buying parts for it unless something breaks. I planned on using it just for training and shooting purposes but I think I might actually use it during a few games, once I get a holster for it. From my initial experience I would definitely say if you are looking for a Glock replica and don't want to pay upwards of $200 then pick yourself up a WE Tech Glock. It also helps that the externals look really good.
Pictures were taken with my phone.