OK, here are my newer (top) and older style 1991s:
Close up of new rollmark:
Close up of old rollmark:
The older guns were matte finished, the newer ones are blue. The older guns came with cheap, poorly fitting composite stocks. Earlier new guns came with better fitting rubber stocks, current guns come with double diamond rosewood stocks.
Note how the older guns were called "1991A1"s yet they didn't have all the A1 improvements (short trigger, arched mainspring housing). Maybe that's why the current guns are called "1991"s. /forums/images/graemlins/confused.gif