Glock Factory Magazine Gen 4 for Glock 37, .45 GAP, 10-Round, Polymer, Black

If you carry a Glock 37 in .45 GAP, you need reliable factory magazines built to the same exacting standard as your pistol. The Glock Factory Magazine Gen 4 for Glock 37 is a 10-round drop-free magazine engineered with a hardened steel feed insert wrapped in advanced polymer construction. That polymer jacket does more than protect the magazine—it resists deformation even under the stress of hard use or accidental drops, keeping your mag reliable when it matters.

Glock factory magazines are purpose-built for your platform, not aftermarket compromises. They're designed to feed reliably and cycle smoothly once they've completed their break-in period. New Glock magazines often feel stiff, and that last round can be stubborn to seat initially—this is normal and actually a sign of tight tolerances that ensure long-term reliability. Load the magazine fully but one round and let it sit for a few days so the spring settles, or run it through several loading and unloading cycles to speed the process.

Black polymer construction keeps things simple and lightweight. Whether you're stocking a spare mag for your nightstand Glock 37 or building a small rotation for regular range sessions, factory Glock magazines represent the baseline of dependability your pistol deserves.

Key Features

• 10-round capacity in .45 GAP
• Drop-free design for reliable function and fast reloads
• Hardened steel feed insert for durability and smooth feeding
• High-tech polymer body resists deformation from impact or rough handling
• Factory Glock engineering and tight tolerances

Specifications

Frequently Asked Questions

Will this magazine work with my Glock 37?

Yes. The Glock Factory Magazine Gen 4 is engineered specifically for the Glock 37 in .45 GAP. Glock factory magazines are platform-specific, so always verify caliber and model compatibility.

Why is my new magazine so hard to load and won't take all 10 rounds?

This is normal for new Glock magazines. The tight spring tension is by design and ensures reliability over time. Load nine rounds and let the magazine rest for a few days to allow the spring to compress naturally, or cycle it through multiple full loads and unloads to accelerate the break-in. Once the magazine settles, it will accept the full 10-round capacity.

What's inside the polymer casing?

A hardened steel insert that handles the feeding function and resists wear. The polymer exterior protects the magazine and prevents damage if dropped or impacted.

Is this a genuine Glock product?

Yes. This is a factory original Glock magazine, not an aftermarket clone. Factory magazines ensure the fit and feed reliability Glock pistols are known for.