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Magazine Extensions

Maximize your carry capacity with Magazine Extensions from GunMag Warehouse. Whether you’re looking for factory extension sleeves, aftermarket upgrade kits, or extended floor plates for factory and aftermarket magazines, we offer a huge selection of magazine extensions from top-selling brands, such as KRISS®, Ruger®, Tyrant Designs®, and CMMG®. What are you waiting for? Shop our full collection of mag extensions today!

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  1. KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines
    KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines
    (59)
    $32.99

    Add to Cart to See Price.

    $25.99 Save $7.00
  3. KRISS Vector Gen 2 .45 ACP +17 Round Magazine Extension Kit for Glock 21 Pistols
    KRISS Vector Gen 2 .45 ACP +17 Round Magazine Extension Kit for Glock 21 Pistols
    (6)
    $32.99 $28.99 $29.69 Save $4.00
  6. KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines 3-Pack
    KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines 3-Pack
    (8)
    $85.99

    Add to Cart to See Price.

    $67.99 Save $18.00
  8. 3 Pack - KRISS Vector Gen 2 .45 ACP +17 Round Magazine Extension Kit for Glock Magazines
    3 Pack - KRISS Vector Gen 2 .45 ACP +17 Round Magazine Extension Kit for Glock Magazines
    (25)
    $85.99

    Add to Cart to See Price.

    $67.99 Save $18.00
  9. Die Free Co Dos Boot +2 Magazine Extension for Magpul Gen3 AR-15 PMAGs 3-Pack
    Die Free Co Dos Boot +2 Magazine Extension for Magpul Gen3 AR-15 PMAGs 3-Pack
    (2)
    $20.99
  10. KRISS Vector Gen 2 10mm +18 Round Magazine Extension Kit for Glock 20 / 40 Pistols
    KRISS Vector Gen 2 10mm +18 Round Magazine Extension Kit for Glock 20 / 40 Pistols
    (3)
    $32.99

    Add to Cart to See Price.

    $25.99 Save $7.00
  11. Strike Industries +5 Magazine Extension for PMAG Gen M3
    Strike Industries +5 Magazine Extension for PMAG Gen M3
    $12.99
  18. KRISS Vector Gen 2 10mm +18 Round Magazine Extension Kit for Glock Magazines 3-Pack
    KRISS Vector Gen 2 10mm +18 Round Magazine Extension Kit for Glock Magazines 3-Pack
    (13)
    $85.99 $87.99

    Add to Cart to See Price.

    $67.99 Save $20.00
  22. Kel-Tec P11 Grip Extension
    Kel-Tec P11 Grip Extension
    (37)
    $7.99
  23. Kel-Tec PF9 One Round Extension
    Kel-Tec PF9 One Round Extension
    (39)
    $22.99 $12.99 $16.99 Save $10.00
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