Out of stock
SKU: AGEBP-320-BLK
The Agency Arms Magazine Extension for SIG P320 17-round +5 Black is a precision-machined base pad designed to extend your factory P320 magazine capacity by five additional rounds. Built from 6061 T-6 aluminum alloy and hard-anodized to MIL-A-8625 Type 3 specifications, this extension delivers the durability required for duty, training, and competition environments where reload speed and round count matter.
This base pad is specifically engineered for SIG P320 17-round magazines and integrates seamlessly with both the Agency Arms X-Series Magwell and factory SIG magwell configurations—providing operators with a drop-in upgrade path without requiring magwell replacement. The extension houses a chrome-silicon alloy spring rated for the increased magazine load, ensuring consistent feeding under rapid-fire strings. The dot matrix panel enables custom marking or identification. Note: this extension is not compatible with the AXG magwell platform, so verify your magwell type before purchase.
Law enforcement officers, competitive shooters, and tactical trainers use P320 mag extensions to reduce reload cycles during qualification events, force-on-force drills, and high-round-count days. The five-round increase directly translates to fewer magazine transitions per string of fire, improving practical accuracy and throughput. Compact enough to maintain concealability in duty holsters, the extension is a straightforward capacity boost for shooters already committed to the P320 platform seeking ammunition capacity without adopting a larger-frame pistol.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
