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  14. 40-Round 1 item
Material
  1. Aluminum 55 items
  2. Brass 1 item
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Inventory
  1. In Stock 136 items
  2. Out of Stock 33 items
Customer Rating
  1. 5
    32 items
  2. 4
    & up     57 items
  3. 3
    & up     68 items
  4. 2
    & up     73 items

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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  9. Backup Tactical +5 Magazine Extension for Glock 19 / 23 Pistols
    Backup Tactical +5 Magazine Extension for Glock 19 / 23 Pistols
    (1)
    $59.99 $54.99 Save $5.00
  11. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate
    $33.99 $36.99 $20.99 $21.99 Save $15.00
  13. TangoDown Vickers Tactical +2 Round Magazine Extension for Glock G43 Magazines
    TangoDown Vickers Tactical +2 Round Magazine Extension for Glock G43 Magazines
    (1)
    $16.99
  17. Mec-Gar +2 Magazine Extension for Glock 17 / 19 Pistols
    Mec-Gar +2 Magazine Extension for Glock 17 / 19 Pistols
    Out of stock
    $16.99 $10.99 Save $6.00
  19. Shadow Systems CR920X +3 Magazine Extension Kit
    Shadow Systems CR920X +3 Magazine Extension Kit
    Out of stock
    $30.99 $25.99 Save $5.00
  20. Warne 9mm / 40 +3 / 2 Magazine Extension for S&W M&P
    Warne 9mm / 40 +3 / 2 Magazine Extension for S&W M&P
    Out of stock
    $39.99 $34.99 Save $5.00
  21. Warne 9mm +4 Magazine Extension for CZ 75
    Warne 9mm +4 Magazine Extension for CZ 75
    Out of stock
    (1)
    $39.99 $29.99 Save $10.00
  26. Timber Creek Outdoors Sig Sauer P365 Magazine Extension Plate
    Timber Creek Outdoors Sig Sauer P365 Magazine Extension Plate
    Out of stock
    $49.99 $29.99 Save $20.00
  27. Odin Works Magpul GL9 Glock 17 / 19 / 26 Magazine Base Pad
    Odin Works Magpul GL9 Glock 17 / 19 / 26 Magazine Base Pad
    Out of stock
    $35.99 $33.99 Save $2.00
  28. Warne 9mm +3 Magazine Extension for CZ 75
    Warne 9mm +3 Magazine Extension for CZ 75
    Out of stock
    $39.99 $29.99 Save $10.00
  30. Walther Q-Series +2 Steel Extended Baseplate
    Walther Q-Series +2 Steel Extended Baseplate
    Out of stock
    $80.99 $73.99 Save $7.00
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