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

$42.99 - $43.99
Bulk Pricing:

Below are the available bulk discount rates for each individual item when you purchase a certain amount

  • Buy 3 or above and get 5% off
(84 reviews)
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*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.


DISCLAIMER: 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.


  • 5
    Wrong order received.

    Posted by Patrick Owens on May 9th 2022

    Great machining, good anodizing, fits perfect, fast shipping. Just wish it was the one I had ordered. I ordered one G21 mag ext. But received two G17/19 instead. Lucky I happen to own a G19.

  • 5
    Mag Ext for Glock 21

    Posted by Adam Frazier on Mar 23rd 2022

    First time use on my 45 but I love the extra bit of weight and never hurts to have a extra round ….. or 4 !!!

  • 5
    Run Flawlessly and Look Awesome

    Posted by Bryce Gill on Feb 1st 2022

    17rds of .45 AARP, what’s not to love.

  • 5
    My son loves it!

    Posted by Amy Davis on Jan 11th 2022

    My son loves it. Great Christmas gift.

  • 5
    Mag. Ext.

    Posted by Jeffrey Nelson on Dec 21st 2021

    Fits perfectly looks great

  • 5
    Great Buy!

    Posted by Ryan Philibert on Dec 14th 2021

    Great product. Looks and feels great! Exactly what I was looking for.

  • 5
    Great Product

    Posted by John M on Nov 9th 2021

    Good quality, easy to install, works great - would recommend

  • 5

    Posted by Carlton Locklear on Oct 20th 2021

    17 rounds in 45 is awesome

  • 4
    Glock 41 mag extension

    Posted by Wesley a rose on Oct 14th 2021

    Works like it supposed to. I am awesome