ProMag GLKA17 StandardBlack Detachable 22rd for 45 ACP Glock 21/30

If you shoot a Glock 21 or 30 in .45 ACP and want more rounds between magazine changes, the ProMag GLKA17 22-round magazine gives you 7 extra rounds over factory capacity. This detachable magazine is built from a proprietary DuPont Zytel-based polymer body reinforced with a full-length stamped and welded steel internal insert—the same core construction method used in factory magazines. It's the kind of upgrade that makes sense for shooters who want flexibility without compromising reliability at the range or in the field.

The ProMag GLKA17 uses an injection-molded follower and a heat-treated chrome silicon wire spring to handle repeated cycles. Whether you're running drills at the range, training for defensive scenarios, or just prefer more ammunition on tap, this magazine fits seamlessly into your Glock 21 or 30 platform. The black finish blends in with standard tactical gear and keeps a low profile.

Made in the USA, this magazine delivers straightforward functionality without the hype. It's a practical addition to your .45 ACP setup—extra capacity when you need it, standard detachable design so it works with all your existing holsters and gear.

Key Features

• 22-round capacity for Glock 21 and 30 .45 ACP pistols
• Proprietary DuPont Zytel-based polymer construction with full-length steel internal insert
• Heat-treated chrome silicon wire spring for reliable feeding and durability
• Injection-molded follower for consistent operation
• Black detachable magazine design compatible with standard Glock accessories
• Made in the USA

Specifications

Frequently Asked Questions

Will this 22-round magazine work with my Glock 21 or 30?

Yes. The ProMag GLKA17 is designed specifically to fit Glock Model 21 and 30 .45 ACP pistols and works as a detachable, standard-mount magazine with those platforms.

What's the difference between the polymer and factory Glock magazines?

The GLKA17 uses a DuPont Zytel-based polymer body with a full-length steel internal insert that is stamped and welded, mirroring the construction method of factory magazines. This hybrid approach combines polymer durability with steel reinforcement where it matters most.

Is this magazine made overseas?

No. The ProMag GLKA17 is manufactured in the USA.

How many extra rounds does this give me over the factory Glock 21/30 magazine?

The GLKA17 holds 22 rounds, which is 7 more than the standard factory magazine capacity for these models.