SIG SAUER P250 P320 Full Size 9mm 17rd magazine

The ProMag SIG-A9 is a 17 Round magazine for the Sig Sauer P320 and P250 pistols in 9mm. Constructed from heat-treated blued-steel, with a follower, lock-plate, and base-plate molded from a proprietary DuPont Zytel based black polymer; and using a spring wound from Chrome-silicon wire and heat-treated for strength and reliability. ProMag magazines include a lifetime guarantee, if you ever have a problem with their magazines; simply return them to ProMag for replacement. 

Features and Specifications:
ProMag Sig Sauer P320/P250 9mm Magazine 17 Rounds Steel Black 
Caliber: 9mm 
Capacity: 17 Rounds
Body Material: Heat Treated Blued Steel 
Spring Material: Heat Treated Chrome-silicon Wire 
Follower Material: DuPont Zytel Polymer 
Follower Color: Black 
Polymer Base Plate 
Color: Black 

Fits:
Sig Sauer P320 pistol and P250 9mm models