About 2 yrs ago I purchased A Detonics CM VI original slip case and 2 mag's, the gun seems fairly clean, the slide is kinda hard to pull back I dont know wether or not that is a good sign of it having few rounds cycled through it ,or just a new recoil spring kit,what can I look for in tell-tale signs of wear on this gun? To tell you the truth it looks like its brand new,It has a very smooth and light trigger pull,this CM has a really great feel,But on the other hand the serial number is in the 15,000's so it probably is in the mid 13's, should I have looked for a later model maybe in the 20's? Over-all I cant complain I paid $300.00 ,Any input would be greatly appreciated..

Peter