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Velocity Mag Extensions are back! IMPORTANT - PLEASE READ:

Some of you are aware we are based in Tumwater, Washington. A state which passed the Unconstitutional Bill 5078 which bans the sale and possession of “High Capacity Magazines”

This Bill also effects our ability to sell one of our top selling accessories, the Velocity Mag Extension in Washington State.

As of July 1st 2022:

Killer Innovations stopped making these and selling them.

As of August 25th 2023:

Killer Innovations will be re-releasing this beloved product for out of state sales only!

Welcome back! Thank you for your patience and support.


Our new Velocity Mag Extensions “Enhanced Grip Feature” cuts will change the way you reload. E.G.F. cuts provide an aggressive serrated lip that give the shooter ultimate grip and angularity control while feeding the mag into the pistol. E.G.F. cuts are located at the bottom-front and sides of the mag extension, so however you prefer to grab your mag for a reload, a perfect grip is always there. The Velocity Mag Extension was designed with strength and durability in mind. Our testing proved the mag extension could survive massive abuse, being repeatedly dropped from 6’ onto concrete without a single failure. Cleaning your mag is made easy with our toolless floor plate removal. Just depress the retaining pin and slide the floorplate out. It’s that easy!

Velocity Mag Extension for Glock Specs:

  • Material: 6061 T6 Aluminum
  • Finish: Anodize
  • Dims: 1.5″W x 1.79″L x 1.66″H
  • Includes extended spring
  • 9mm +5 rounds
  • .40 +4 rounds

Velocity Mag Extension for Glock 19:

  • Weight: 1.5 oz
  • Compatible with: Glock 19, 23, 32, and 47 – 15 round magazines only

Velocity Mag Extension for Glock 17:

  • Weight: 1.4 oz
  • Compatible with: Glock 17, 22, 24, 31, 34, 35 AND Glock 19X and 45


These pair perfectly with our Magwells!

Click here for G19 & G17 Gen 3-4 Magwells

Click here for G19, G17 & G45 Gen 5 Magwells

Click here for Poly 80 compatible Magwells

*Note Gen 5 Magwells and extensions sometimes have interference with the screw that holds the mag body on. This is rare, but we have seen it. IF you find your 19 or 17 Extension interferes with the magwell please email we have low-profile screws available.

Velocity Mag Extension for Glock Installation Instructions

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.

Due to differences in metal composition and finishing processes, Killer Innovations cannot guarantee exact color matches among our accessory items.  For more information please see our detailed explanation.


*Killer Innovations is not responsible if you purchase an item you cannot legally possess in your state, county, or city. Some states, including but not limited to: Washington, California, Illinois, New York, Massachusetts, Connecticut, Hawaii, and New Jersey, restrict the sale and ownership of certain firearms and/or firearm parts and accessories. It is your responsibility to know your state and local laws before making a purchase at Killer Innovations.


  1. mzmgrand (verified owner)

    Great product! I have several Killer Innovations mag extensions.

  2. mzmgrand (verified owner)

    Great product! I have several Killer Innovations mag extensions!

  3. biggbroose (verified owner)

    I ordered a FDE mag extension on Thursday and received it on Monday. Best mag extension on the market. No tooling marks from CNC, no rough edges, just excellent fit and finish. Installed easily and feeds rounds through 3 of my Glocks flawlessly. oh, and now i can stand my mags up !!
    I will be ordering more products asap ! Go ahead and give this company your business.
    Thanks KI

  4. ecreto (verified owner)

    I love the velocity +5 baseplates/mag extensions by Killer Innovations! I currently own 10 of them for my Glock 17 and 5 of them for my Sig X5 Legion!
    They are the best ones on the market!

  5. brad.jones588 (verified owner)

    Love it, now I gotta get the velocity Maxwell!! 🙏🙏🙏🫶🏻🫶🏻🫶🏻

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