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Why customers choose this item
✓Fits SIG P320 magazines
✓Plus 5 round capacity
✓6061 T6 aluminum body
✓Anodized aluminum finish
✓Secure fit magazine extension
✓Black finish
Product highlights
Extended magazine base plate for Sig P320 magazines in multiple capacities
Adds plus five round capacity for increased ammunition load
Machined from 6061-T6 aluminum for strength and durability
Compatible with 15 17 and 21 round P320 magazine bodies
Simple installation process supports quick upgrade of factory magazines
Anodized black finish provides corrosion resistance and uniform appearance
Product description
The Strike Industries Extended Magazine Plate for SIG SAUER P320 is a magazine base plate designed for increasing capacity on compatible P320 magazines. The Strike Industries Extended Magazine Plate for SIG SAUER P320 provides an extended profile to support additional round capacity.
This magazine plate is machined from 6061-T6 aluminum and features an anodized black finish for surface protection. It is compatible with 15, 17, and 21 round SIG SAUER P320 magazines and adds an additional plus 5 round capacity for 9mm configurations. The Strike Industries Extended Magazine Plate for SIG SAUER P320 installs using a simple attachment process and maintains a secure fit during operation. This product is used for extending magazine capacity in standard configurations. In typical setups, the base plate replaces the factory floor plate and interfaces with the magazine body for consistent retention.
Volume pricing for business and agency buyers, plus free ground shipping on most continental U.S. orders.
Business & agency accounts
Bulk discounts
Volume pricing, dedicated account management, ACH payment options, and special sourcing for businesses, agencies, law enforcement, and first responders.