I too would be interested in the P220 mag.
Here's what I have to pay it forward:
1) Federal bulk pack 500rd .22lr high velocity 40gr
2) CCI Mini-Mag ~75rd (slightly used 100rd pack) .22lr High Velocity 36gr hollowpoints
3) Winchester White Box 50rd box .380acp 95gr FMJ
4) Brand new unopened Bore Snake, .40, .41 caliber
5) Sprinco recoil reduction guide rod for Sig P220
6) Sprinco recoil reduction guide rod for Sig P225/P6
7) Corbon 20rd box 9mm JHP +P, 90gr 1500fps @ 450lb/ft
8) Federal Hydra-Shok 20rd box 9mm JHP +P, 135gr 1050fps @ 330lb/ft
9) LPA adjustable target rear sight for Walther P99/Smith & Wesson SW99 (fits both)
I could use the 9mm Hydra Shok....
I'll look in my safe for some stuff to post