+4 Base Pad For Glock 21/41 .45 Cal OEM Magazines

96 reviews Write a Review
$35.99 - $36.99
Bulk Pricing:
Buy in bulk and save

+4 Base Pad For Glock 21/41 .45 Cal OEM Magazines

$35.99 - $36.99

+4 Base Pad For Glock 21/41 .45 Cal OEM Magazines

$35.99 - $36.99

*Will not work with 10mm ammo. Our extensions are designed to work specifically with their intended magazine, the slightest off-angle may cause failure to feed or other malfunctions.*

GLOCK .45 +4

*Not for sale to California residents. A courtesy email will be sent to CA residents who place an order for product that has the capability of taking a magazine past ten rounds. Ultimately a refund will be issued. CA residents can only buy +0 base pads or GLOCK 43 and GLOCK 42 base pads. The 43 and 42 base pads do not take the mag capacity past ten rounds.

The pin set screws are set with Loctite® at the specific tension we recommend, and will generally never need an adjustment. Tightening the base pad screw is not recommended and may be difficult because the screw is set with Loctite®; trying to force the set screw to turn could result in stripping the screw. We do not warranty base pads for stripped heads on set screws or pins lost in result of tampering with the set screw.

*Remove the metal insert at the bottom before installation*

*Will not function with early generation Glock mags that have u-notch cut feed lips.*


  • +10% stronger spring included.
  • Overall weight 1.7oz.
  • Length, 1 1/2 inch front side, 3/4 inch on back side.
  • Patented proven push pin design.
  • No specialty tools or devices required to disassemble.
  • One piece design, no extra parts to possibly lose during disassembly.
  • Fits the USPSA 140mm gauge.
  • Ideal for full size magazines.
  • Holds 17+1 rounds of .45ACP.
  • The added weight helps the magazine drop free easier for faster reloads.
  • CNC machined from billet aluminum.
  • Hard Anodized.
  • Made in the USA.

This Taran Tactical Innovations GLOCK base pad works on GLOCK models 21/41. This TTI base pad will add 4 extra rounds of .45 ACP to the magazine. This base pad does adds a little extra weight to the magazine which helps the empty mag drop free easier for faster reloads. This TTI GLOCK base pad, just like all of our base pads, is designed to give you the edge over your adversaries. We use our patented push pin design to lock the base pad to the magazine, which makes for easy field stripping and cleaning your magazines between stages. Just push down the pin, slide the base pad on and push the pin up to lock the base pad onto the magazine. Our one piece design is great because there are no extra parts or tools needed to attach the base pad to your magazine. The base pad itself is machined out of billet aluminum and is hard anodized to ensure durable long lasting color. All machining and manufacturing is done in the USA.

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

DSCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols

  • Glock 21 base pad

    Posted by Dylan on Dec 27th 2022

    The +4 base pad works great. Have two now for work and have had function issues. I do wish I could buy a +4 base pad with mag from the website due to Glock 21 magazines are not as available as Glock 17 or 19 in stores. First world problems I guess. Again great product and will buy more in the future.

  • Glock 21 plus 4 magazine extension

    Posted by Robert Gandara on Dec 9th 2022

    I have the plus 4 magazine extension on all 3 of my factory magazine's. They work great and are well made I would definitely recommend.

  • Quality

    Posted by Warren on Oct 12th 2022

    I have purchased several of these mag extensions, they all work good and easy to install.