The Drop-In FSSG that I have been using has worked well in terms of providing select-fire capability to my Glock 23 reliably, but I do have one issue with it, and that is in terms of ACCURACY when shooting it at full auto.
I first noticed when I saw that the spread of shots at 10 meters was quite large. The first shot would be dead on, but then the second and third shots would be way off by a couple of inches from eacch other. A rough estimate would be like this: If I aim at the bottom of the target, the first shot would hit spot on the lower right side of the abdomen, then the second would be on the chest area on the left side of the chest of the target, and finally the third shot on the left shoulder or left side of the face area of the target (see picture below).
I found this a bit strange, because the other metal FSSG that was given to me shot quite good at 10 meters (see my previous blog here). With everything else the same (i.e., same configuration, same distance, same ammo, etc.) from the pictures it looked like the metal FSSG was shooting tighter groups by about 3-4 inches.
I can't really say for sure how this came about, but my main suspect is the problem is in terms of the LOCK TIME BETWEEN SHOTS. I suspect is the issue, because when I do the Dry-Fire Test I described on another previous blog, the slide sorts of pauses a bit when it is near the end of its travel, before it goes right thru and releases the Striker.
