Sig Sauer P320-XTEN 10mm Auto Handgun Magazine - 15 Rounds - Don't sacrifice reliability by using a third-party magazine. Use these factory P320-XTEN 15 round magazines to ensure proper function. Heat-treated carbon steel body, coated for enhanced lubricity. High-impact polymer floorplate. Note: Images may differ slightly from the actual product. Sig Sauer's high-quality magazines are sourced from multiple manufacturers and are then made to their exact specifications, because of this there may be slight differences in stamping and finish color.