GLOCK G31 Magazine .357 SIG 15rd

GLOCK Model 31 Detachable Magazine — .357 SIG, 15-round. This is a replacement or spare detachable magazine designed to feed .357 SIG cartridges into compatible GLOCK pistols.

The magazine provides additional capacity for range, training, or as a service/replacement magazine. It is intended for use with GLOCK Model 31 pistols chambered in .357 SIG and is packaged for individual sale.

• Capacity: 15 rounds.
• Caliber: .357 SIG.
• Fit: Designed for GLOCK Model 31 (G31).
• Construction: Hardened steel insert encased in high‑tech polymer to resist deformation.
• Finish/Color: Black.
• Dimensions (as provided): 1.35 x 4.15 x 8.45.
• Weight (as provided): 0.21.
• Packaging: Individually wrapped / blister package (product packaged individually).
• Serviceability: Product data indicates the magazine is not intended to be user disassembled.

Specifications & Construction

This magazine uses a hardened steel tube/insert encased in GLOCK polymer to protect the magazine body and help prevent deformation from impact or environmental exposure. The internal spring and follower are designed to provide consistent feeding. Finish is black polymer/steel. Listed product dimensions are 1.35 x 4.15 x 8.45 (height x width x length as provided). Weight is listed as 0.21 (unit as provided).

Compatibility & Intended Use

Fits GLOCK Model 31 pistols chambered in .357 SIG. Typical uses include range and training, as a replacement or spare magazine for service or personal use. The magazine is a detachable type intended for direct replacement in compatible GLOCK pistols.

Shipping considerations

Product data indicates restricted shipping for some jurisdictions: restricted direct shipping to California, Rhode Island, and Washington; product data also indicates no sale to Oregon.