1 have 4 new Glock 21 mags (13rd) that I would like to trade for 4 new Glock 17 (17rd) mags. I also have 5 excellent Smith 4006 (11rd) mags that I would like to trade for 4 used glock 17 (17rd) mags in excellent condition. Contact at
[email protected]. I posted these on Glocktalk but the ad didn't generate any interest.