As you know...in MA, we're limited to 10 rd magazines. As such, my AR-15 doesn't look right with a 10 round. So, I ventured to find new, modified 30 round magazine that would only hold 10 rds. My club limits rifle capacity to 10 rds anyway. Also, no pre-ban magazines that I could find were in good enough condition to warrant spending $40 each. I found calegalmags.com. They buy, modify and sell 30 round Magpul magazines for $20. I ordered a couple and they are great. Cannot tell they have been modified and the function is perfect. FIgured I'd make a post in case someone else is looking for an alternative for new, quality mags in the people's republic of MA.