Herrington Arms +5 Magazine Extension for Sig P320 Magazines
or 4 interest-free payments of $16.25 with 
6 Magazines Per Order: Due to extreme volume, we are limiting sales of magazines to 6 per customer order. This applies to individual and bundled magazines. AT3 reserves the right to cancel any order over the 6 magazine limit.
- Free standard shipping on orders $139+ details
- 90-day no-hassle returns policy
- Limited Lifetime Warranty what it covers
Product description
Extended Capacity and Grip
The Herrington Arms +5 Magazine Extension is the perfect upgrade for Sig P320 owners looking to increase their round capacity while maintaining reliability and ease of use. Designed to add five extra rounds to your standard Sig P320 magazine, this full metal part works seamlessly with any capacity factory Sig P320 magazine and gives shooters a nice place to grab the magazine for quick reloads.
Features
- +5 Round Capacity Increase – Expands magazine capacity without sacrificing reliability.
- Extended Length – Provides a secure grip for faster, more confident reloads.
- Precision-Machined Aluminum Construction – Lightweight yet durable, built to withstand tactical and competition use.
- Easy, Tool-Free Installation – No gunsmithing required. Installs quickly and securely.
- Spring-Compatible Design – Works seamlessly with factory springs to maintain flawless feeding.
Specifications
- Brand: Herrington Arms
- Model: +5 Magazine Extension for Sig P320 Magazines
- MPN: HE-320-5-BL
- Fit: Sig P320 Magazines
- Caliber: 9MM
- Finish: Black Anodize
- Material: 7075 Aluminum
- Color: Black
- Length: 1.23″
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Verified buyerQuestions & Answers
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Warranty & returns
Limited Lifetime Warranty
Their lifetime warranty is a no-questions-asked warranty on their products! It covers damages including smashed ports, destroyed threads, or any other major issues. It does not cover the anodizing or cerakote due to extreme wear from everyday use or factory color. No two anodized compensators are the same, anodizing is an unstable and fluctuating process that we thoroughly QC. They offer a 30-day refund policy if the product has not been installed, Loctite applied, or damaged.
90-day no-hassle returns
The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.
If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.
