I do have to say, modifying the PPK to Full Auto is not recommended, mine originally worked well but the heavy blowback in full auto eventually broke the firing pin setup and I lost it somewhere in my back field. I had to Macgyver a bolt in place to kind of work but now my Full Auto Modded PPK shoots out of control, what I mean by this is when I press the trigger, it does not stop shooting until all the BB's are gone. Safe, I don't think so!
My suggestion is to leave the Umarex Walther PPK as is, it truly is a an awesome CO2 Blowback BB replica with some really decent blowback recoil in a small airgun.
I will be doing proper Table Top and Field Test Videos for each of these Airsoft guns as soon as I can get to them all, starting with the Umarex Gas Blowback H&K MP7 A1 Airsoft PDW so stay posted for these upcoming video reviews...
Another filed test video in the series. This one is of the Umarex Walther PPK/S CO2 4.5mm BB pistol, I show you both my regular unmodified all black PPK/S and shoot it through my Chrony Chronograph with an averaged reading of 282 FPS, not bad considering the manufacturers claim is 295.
I also shoot 8 rounds with my stock Umarex PPK/S at a target to see what kind of accuracy I get, and just for fun I shoot a 15 round magazine into the same target with my modified fully-auto sliver slided PPK/S.
To finish things up, I slowdown the action just a bit using my high speed Casio camera to capture the blowback action of both my stock and modified Umarex Walther PPK's.
Enjoy my YouTube Video of my Umarex Walther PPK/S CO2 BB pistols getting Chronographed, shooting at a target and slowed down a bit with my High Speed Camera.
This has been a great year of adding to my Air and Blank Gun Collection, and it was also the beginning of ReplicaAirguns.com and the expansion of my YouTube Channel from 1 video to 30 videos, and all of this started back only in June of this year - Not bad!
I wanted to take a snapshot so-to-speak of my entire Air and Blank Gun Collection so over time as my collection expands, I can look back from year-to-year and see how it has grown.
Here is my Air Gun and Blank Gun Collection for 2010:
This is a video I posted on YouTube a while back that has gotten a lot of views (Now Over 300,000). It's basically me and a friend shooting a couple of guns. The first set of guns (One in each hand - Tomb Raider Style) are two Walther CP99 Compacts made by Umarex. The CP99 Compact is a great little BB gun with a very fast and light trigger pull.
Next up is another Umarex product, a Walther PPK. This one is moded to fire Full Auto, making it one of the smallest Full Auto BB Guns. Too bad it's all over so fast! I'll look at doing some proper reviews of these fine Airguns down the road...