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Magpul AMAG 21 SG9 9mm 21-Round Magazine for Sig P320
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Capacity indicators from five rounds and to single-round intervals
Corrosion-resistant stainless-steel magazine body for reliable function
Flared, easily removable floorplate for field maintenance and cleaning
High-visibility controlled-tilt follower for consistent feeding
Paint-pen dot matrix for load marking and fast in-use identification
Stainless-steel spring engineered for longevity and durable performance
Specifications
Description
The Magpul AMAG 21 SG9 is a 21-round magazine for handguns chambered in 9mm Luger, built for the Sig P320 and M17 frame size. It uses a stainless-steel magazine body with polymer sub-components and is intended as a replacement or spare for compatible Sig P320 pistols.
The magazine has a high-visibility, controlled-tilt follower and a stainless-steel spring. The flared floorplate is removable for cleaning and routine maintenance. Capacity indicator windows begin at 5 rounds and continue in 1-round increments along the spine. A paint-pen dot matrix allows the magazine to be marked.
The finish is silver and black. The magazine is compatible with all P320 and M17 frame-size pistols.
- Caliber: 9mm Luger
- Capacity: 21 rounds
- Compatible platform: Sig P320 / M17 frame size
- Body material: Stainless steel
- Sub-component material: Polymer
- Color: Silver/Black
- Floorplate: Flared, removable
- Capacity indicators: Start at 5 rounds, 1-round increments







