I bought a SAM-7 just over a year ago. It was the 733rd one made. The bolt carrier was a dirty grey color, the firing pin was allowed to travel loose in the bolt, and the end of the firing pin was a square protrusion. The overall quality of the gun was superb, but I sold it to buy a Sig 220ST. I missed it.
A few weeks ago I bought another SAM-7, and I swear that this rifle is a few steps ahead of the first as far as the quality of the parts and fit & finish are concerned.
On the new SAM-7, I have:
* a Very Nice, solid black bolt carrier
* a spring-charged firing pin that does not allow the pin to travel freely within the bolt
* a rounded, circular surface at the rear of the bolt which the hammer hits to manipulate the pin
* trigger pull feels even more smooth
* the finish seems to be of greater quality than the first
AND MOST OF ALL, the barrel seems to handle the heat far better than the first. Perhaps I am wrong, but after firing several dozen rounds through this gun at a rapid pace, the barrel does not visibly appear to be hot. I remember that barrel of the first gun would would start smoking from the heat after the first two magazines.
Even the rear sight seems to look better, although they are both functionally identical.
And of course, the rifle ran without a hitch!
I'm feeling an urge to get another!
Does anyone else notice these differences? Every time I look at this gun, I feel satisfied and impressed with my purchase.