ProMag Industries Sig Sauer SIGA14 Black P320 Compact 9mm Luger Handgun Magazine - 15 Rounds - ProMag has grown to become one of the largest US-based magazine manufacturers since they got their start in 1978. This 15 round magazine for the SIG Sauer P320 Compact is made right here in the U.S.A. by American workers. The magazine is constructed steel to give a long service life in the toughest conditions. For added reliability, ProMag also included a chrome silicon spring that resists taking a set no matter how long you leave the magazine loaded. Get shooting with ProMag. Made in USA Fits: Sig Sauer P320/P250 Compact Injection molded magazine follower Magazine spring formed from heat treated chrome silicone wire Magazine body constructed of heat treated carbon steel with black oxide finish