I just purchased my first Glock, a 27 gen4. I bought it at Cabela's about 10 hours from here. So, dropping in and asking them about my issue is not exactly convenient, LOL. I went to the range on Monday, fired 100 rounds and had four rounds fail to fire. I figured, I'm new to Glocks, maybe it just needs a little break in time for the firing pin. After all, the manual says the firing pin may not move freely at first until the gun has had some rounds through it. Or perhaps the ammo was an issue. Wednesday, I go to the range and fire 200 rounds. Now I'm getting more comfortable with the function and I'm noticing that some rounds are hitting noticeably higher than point of aim for other rounds. I also had the same problem with failure to fire, this time nine rounds out of 200. At that point, I knew I had a problem. I knew I wasn't limp wristing it. It had to be something else. I took a close look at the "failed" rounds and the spent brass. The failed rounds had light primer strikes near the edge of the primer. The fired rounds had primer strikes ranging from center to near the edge. I started looking to the gun and noticed that the slide seems to "catch" just before going into battery. I did some Google-ing and found a spring test on YouTube, which my gun failed. During the spring test, the slide stops and does not go into battery until you release the trigger. Now, all of this makes sense to me. If the gun is not in full battery the primer will not be in proper alignment with the firing pin, causing an off center strike. Also, if it is not in full battery, the barrel will not have traveled upward at the rear fully, leaving a small angle between the breech and the slide. This means that not only is the firing pin hitting off center, but with the gap created by the angle means a lighter primer strike. Also, the issue I was having with some rounds striking noticeably higher than others is likely because under this condition, the barrel is still tilted muzzle up in relation to the slide and the sights. I believe it is the recoil spring assembly. The two ends of the assembly do not appear to be square in relation to one another, possibly indicating that the rod within is bent slightly. Anyone else had this issue? So now, the question is, what do I do next? Find a local dealer and approach them with the problem, or contact Glock directly? I'm actually considering purchasing a Glockmiester Stainless Steel RSA. Any thoughts on that?