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SOLVED
Well the gun problems is now solved. I will give an outline bellow to help others.
KCS Glock 18c - stock, no upgrades.
Problem:
This is two fold. I got the gun used and it only fired in semi auto. When I choose full auto, the gun would fire one round (which was chambered) then the slide would stop about 1" from battery position venting all the gas in teh mag.
Problems found during diagnoses:
Because this gun was used, it was well worn in some parts. The internals of the gun were well lubricated but there was alot of dirt and grime. Personally this is not a good thing for any gun real or airsoft not to mention the gun was already not working correctly. When I took the slide apart to all it's components I found that one of the previous owners has already gone inside the gun by wear marks from the varrious screws etc. I eventually found that the springs (part #23) were not fully seated in their correct position. The springs where binding against the main chamber (part #22) and the slide. The result was the chamber (part #23) did not slide smoothly. This is a good time to say that when you buy a used gun make sure you look closely inside the gun for previous "gun doctors" hehe. Anyways, the spring did/does have a kink on one end. After much frustration I was able to bend it back to 90% of what it should be.
Action taken for repair:
As above I took teh slide apart to all it's varrious peices and used cotton swabs and silicone oil to clean everything. This way I know it's in good clean shape as well well lubricated. Apon re-assembly of the slide I made sure to place the springs (part #23) in correctly. This procedure totally fixed my gun as I know has full auto capabilities and my safety (middle selectro switch setting) functional.
Problems post assembly:
After the gun was assembled I found that the slide woudl not cycle 100%. It would fire, but the slide would not move back far enough as to load the next round.
Action taken for repair:
I later found after taking a very good examination of another glock 18c along side mine, that I placed the seal in the main chamber (part #27) in backwards. I woudl suspect that this changed the internal volume of the chamber enough that enough presure would not build up to cycle the slide. So I wanted to give you guys note that make real good sure that you follow the internal parts diagram of any gun you work on and closely follow the orintation of any and all parts as this will affect the performance and opporation of your gun. Anyways, after I found my problem, I reseated the seal correctly. Once everything was back togethter again the gun now works flawlessly.
Overall impressions:
I must admit that gunsmiths really do need more credit then I'm sure most of us give them. I am not a stranger to taking stuff apart, fixing it, and putting it back together again. However this has taught me a lesson that you really have to pay attention to what your doing. Althoguh anyone can take guns aparts, you need a special gift to find problems that are right in front of you and be able to know how to fix it. Props to all gunsmiths out there. Although most of you will never take yoru gun apart, it is a pretty fun way to spend a weekend, never know what you might learn.
JD
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