P320 Compact Magazine Extension
P320 Compact Magazine Extension . Henning group's edc magazine extension is designed to give you three more rounds in your sig sauer p320. Only works on the p320 compact 15rd mag and 17rd mag for the p320 full size. Sig Sauer Magazine Sig P320 M17 21 RD 9mm Steel MAGMODF921COY from www.omahaoutdoors.com Sig sauer p250 / p320 subcompact.45 acp 6 round magazine. Rated 5.00 out of 5 based on 1 customer rating. No ammo, guns, or magazines pictured are included in this sale.