I have used a variety of AKs from semi to full auto. I would like to buy one and I'm not sure where to start, I know there are a ton of places to look and buy. I been looking at K-Var Corp. ™ recently. What are the differences between the SGL21 and SLR-107? Also, the IZH-132 compared to the other two, will it take regular AK mags? I assume the barrel is not chrome lined but I do like the longer barrel. I am looking at putting whatever I buy into a bullpup stock perhaps, Home I'm not interested in what the furniture is like as one way or the other I will change it. I will be home on R&R from AF in June and would like to pick it up, then take care of the furniture. Please advise on solid varieties and reputable places/ways to purchase. It would be appreciated.