GLOCK G21 10-round .45ACP Pistol Magazine

(19 reviews)
Current Stock:

GLOCK G21 10-round .45ACP Pistol Magazine


This is an OEM factory new/original drop-free 10-round .45ACP magazine for your GLOCK G21. Glock magazines have a hardened steel insert encased in high tech polymer. This polymer coating protects the magazine & prevents deformation, even when dropped from a great height.


  • Constructed of stiff metal encased in GLOCK polymer
  • Viewing windows for each cartridge for visual confirmation
  • GLOCK factory replacement magazines
  • Double-stack design


  • 5

    Posted by Steve on 12th Mar 2017

    Product works well and it was sent on time! Thank you, Arms Unlimited!

  • 5
    My Glocks Love It

    Posted by Gary Janssen on 26th Feb 2017

    I have a Glock 27 and a Glock 21 and they both fit nicely in this holster. The one thing I wished it had was the magazine holders on the left side instead of everything being on one side. I have already ordered separate magazine pouches to take care of this problem. Qualifying for my CCW the sheriff's deputies highly recommended keep your ammo magazines on the opposite side of the gun for easy access.

  • 5
    Glock 21 mag

    Posted by Joseph Villabroza on 23rd Sep 2016

    Fair priced, quick shipping

  • 5
    Glock 21 magazines

    Posted by Kraig on 12th Sep 2016

    Super low price with fast free shipping!

  • 5
    Great Price!

    Posted by Julio Cesar Sandoval on 12th Sep 2016

    I had been looking for additional magazines and by far your price where the best, thanks for the quick shippment.

  • 5
    Incredibly fast service

    Posted by Richard Wolf on 9th Aug 2016

    I received my mags in a matter of a few days. Thanks

  • 5
    Glock magazine

    Posted by Unknown on 17th Apr 2016

    Good price with free shipping. Can't beat it.

  • 5
    GLOCK G21 10-round .45ACP Pistol Magazine

    Posted by David Coe on 31st Mar 2016

    Great product, Fast delivery

  • 5
    Nice Glock mags and superb service from AU

    Posted by Luis on 11th Mar 2016

    This is more a review on Arms Unlimited because who can complaint about Glock Magazines (A+). I've purchased several items from Arms Unlimited and ALWAYS it has been a great experience. Their prices are super low and their shipping speed is superb. VERY happy customer... Keep doing a great job guys.