BT "Sta-Tite" guiderod with 15# ISMI spring. I had this in my G22 and it has approx 250 rounds on it. $20 shipped I have 2 G22 magazines @ $20 each shipped or both @$35 shipped. Will trade for G19 or G17 mags. Mags and guiderod both for $45 shipped. These are Glock factory FML Hi-Cap magazines in excellent condition.