Sig Sauer BBLMODSC9 P320 Fits Sig P320 9mm Luger 3.60" Black Nitride Steel
http://www.tandktactical.com/shop/798681538355-sig-sauer-bblmodsc9-p320-fits-sig-p320-9mm-luger-3-60-black-nitride-steel-8617
http://www.tandktactical.com/web/image/product.template/8617/image_1920?unique=cc5ae55
Sig replacement barrel is for your Sig P320 subcompact model chambered in .9mm and is 3.6" long.