ProMag builds this 18-round magazine (part no. COLA37) for the Colt 1911 in 9mm, a substantial extended-capacity option in blued steel over the standard 1911 magazine.

Key Specifications

• Chambered in 9mm Luger.
• Holds 18 rounds, well beyond a standard 1911’s 8-9 round capacity.
• Fits the Colt 1911 in 9mm.
• Body is blued steel.
• Manufactured by ProMag.

Frequently Asked Questions

Will this fit a .45 ACP 1911? No, ProMag lists this magazine specifically for the 9mm Colt 1911, not the .45 ACP version.

Will this stick out below the grip? Yes, an 18-round magazine in a 1911 pattern will extend noticeably below the grip given the platform’s standard 8-9 round capacity.

Buy the ProMag Colt 1911 9mm 18-Round Magazine

Order it from our Lubbock, Texas gun shop. Browse our full handgun magazines selection.