Sig Sauer P320 / P250 Full Size 18-Round Magazine – .40 S&W / .357 SIG, Black

Overview

The Sig Sauer Full Size 18-Round Magazine is engineered for reliability, performance, and durability. Designed for both the Sig P320 and legacy P250 platforms, this factory-original magazine delivers smooth feeding and superior construction, making it a trusted choice for professionals and enthusiasts alike. With an extended 18-round capacity in .40 S&W or .357 SIG, it provides serious firepower in a sleek, steel-bodied design.

Key Features

• Compatible with Sig Sauer P320 and P250 Full Size pistols

• Holds 18 rounds of .40 S&W or .357 SIG ammunition

• Durable steel construction with black finish

• Factory polymer baseplate for enhanced grip and impact resistance

• Designed for smooth and reliable feeding

• Sig Sauer OEM quality for dependable performance

Specifications

• Caliber: .40 S&W / .357 SIG

• Capacity: 18 rounds

• Material: Steel with polymer baseplate

• Finish: Black

• Dimensions (Approx.): 1.75" (Shipping Length)

• Weight: 0.3 lbs

• MPN: MAG-MOD-F-43-18

• UPC: 798681561018

Applications

Ideal for tactical operations, duty carry, home defense, or range training, this high-capacity magazine is perfect for shooters who demand performance and reliability from their Sig Sauer P320 or P250 platform.

Additional Features

• Factory original from Sig Sauer—ensuring precise fit and finish

• Backward-compatible with discontinued Sig Sauer P250 Full Size

• Compatible with both .40 S&W and .357 SIG calibers without modification

• Designed for full-size frame only (not compatible with compact or subcompact variants)