ProMag RUGA37 15rd .40 S&W Magazine – Ruger SR, Blued Steel

The ProMag RUGA37 is a replacement detachable magazine designed to fit the Ruger SR. It holds 15rd of .40 S&W and is constructed with heat-treated steel, an injection-molded follower, and a chrome-silicone wire spring. The magazine is finished in oxide and is made in the USA.

Key Specifications

• The magazine fits Ruger SR.
• The capacity is 15rd.
• The caliber is .40 S&W.
• The construction uses heat treated steel.
• The follower is an injection molded mag follower.
• The spring is formed from chrome silicone wire.
• The finish is listed as Oxide.
• The product type is Detachable.
• The model designation is Standard (RUGA37).
• Made in the USA.

Reliable as a spare or replacement magazine for range use and storage, the RUGA37 offers a direct-fit option for Ruger SR owners. Its heat-treated steel body combined with the chrome-silicone spring and injection-molded follower supports consistent feeding and long-term service life in routine use.