Magpul MAG1331-SST P320 SG9 17rd 9mm Fits Sig P320/M17/M18 Compatible w/ Full Size/Compact/Sub-Compact Stainless Steel $33.20
Magpul MAG1377BLK DT Carbine Stock Black Synthetic for AR-15, M16, M4 with Mil-Spec Tube (Tube Not Included) $61.70