The gun disassembles like any other Glock by pulling down on the 2 switches at the same time and pulling back and releasing the slide. The slide and compensator come off as a whole unit. There' s a small screw under the compensator that needs to be removed before the compensator can be taken off. Once this is done undo the recoil spring guide from it's locked position and the rest can be removed. The hop up adjustment on this gun is similar to most Marui type handguns and uses a small wheel to adjust up or down.


Performance:

The Advance that we used for testing shot some tight groups for a Blowback gun. shooting from across the room, we were able to get 10 shot groups of less than 2 inches with only a couple of "wild" shots that strayed off target. One group of 10 shots (which I proudly fired) was less than an inch wide. Velocity testing with .2 gram bb's ranged from 310 fps to 320 fps on Green gas to 220 fps to 240 fps on HFC 134. I have received a lot of questions regarding the velocities we get when we test the guns. For the record, I leave the hop up at the factory set position and try as much as possible to make sure the magazines are filled and at least at room temperature before we begin to chronograph. BTW, I was using Excel .2 gram bb's, but after a lot of testing, I found that the finish on the Excels causes binding in some magazines which results in jams and miss feeding. Not good when doing performance testing. So, I now use KSC .20 gram bb's which seem to work fine in most guns and is clean enough for use in accuracy testing. While field testing the Advance, I found it a little harder to get used to than most handguns I've tried. I leave this to a personal problem I have with Glocks in general. Players familiar with me know that while I have owned a "Real Steel" Glock 23 and 2 airsoft Glocks (all of which have been sold), I prefer not to play with Glocks. I was however more than satisfied, if not impressed, with the accuracy the Advance is able to deliver. All of the "regulars" that frequent the Power Edge CQB Arena have at one time or another owned or played with the Advance and most were more than pleased with the results they had with it. The only flaw to the Advance lies in the plastic Slide and barrel. Almost all of the guns that I know of that regularly use green gas has had durability problems with the slide. Most have been able to replace the slide by purchasing an after market metal slide from Guarder (which is typically about $150.00 - $200.00) or salvage a metal slide off of the KJ Works Glock 27.