ProMag Sig P320 9mm 21-Round Magazine, Black/FDE

ProMag replacement magazine for the Sig Sauer P320 in 9mm. This 21-round magazine uses a heat-treated steel body and a Flat Dark Earth polymer endplate for a mix of durability and corrosion resistance. The follower is injection molded and the spring is formed from heat-treated chrome silicon wire. This component is manufactured in the USA.

Key Specifications

• The magazine capacity is 21 rounds.
• Designed to fit the Sig Sauer P320 pistol.
• Chambering is listed as 9mm.
• The magazine body is constructed of heat treated steel with a black oxide finish.
• The endplate is finished in Flat Dark Earth.
• The follower is injection molded.
• The spring is formed from heat-treated chrome silicon wire.
• The product is made in the USA.
• The listed color includes Black and Flat Dark Earth.
• The product type is a Magazine.

Built for straightforward, dependable function, this ProMag magazine provides a high-capacity option for Sig P320 owners seeking durable construction and consistent feeding. Its steel body, purpose-built spring, and FDE endplate make it suitable for range use, training, and service-oriented applications where robust components and reliable performance are priorities.