I’m looking to standardize all on my magazines to the PMAG M2. I have 10 PMAG M3 30-round, 10 Surefeed 30 round, and 2 PMAG M3 40-round I’m looking to for PMAG M2. A few of them have been opened. Looking to trade a 2 to 3 trade except for the 40-round. That will be a 2-4 trade.