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  1. Apex Tactical 1 item
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  2. 12 Gauge 1 item
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  14. 40-Round 1 item
Material
  1. Aluminum 55 items
  2. Brass 1 item
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  4. Polymer 62 items
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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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  2. Walther +2 Aluminum 9mm Magazine Extension for PPQ Pistols
    Walther +2 Aluminum 9mm Magazine Extension for PPQ Pistols
    Out of stock
    $60.99 $44.99 $46.99 Save $16.00
  3. Mec-Gar Drop Protection System Plus-2 Adapter
    Mec-Gar Drop Protection System Plus-2 Adapter
    Out of stock
    $12.99 $8.99 Save $4.00
  4. Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    $35.99 $39.99 $33.99 $37.99 Save $2.00
  6. Tyrant Designs +3 Magazine Extension for Sig Sauer P365 X-Macro Pistols
    Tyrant Designs +3 Magazine Extension for Sig Sauer P365 X-Macro Pistols
    (7)
    $37.99 $39.99 $34.99 $35.99 Save $4.00
  7. Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 17 / 22
    Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 17 / 22
    (3)
    $49.99 $39.99 Save $10.00
  8. TacStar Extended Shotgun Magazine Tube for Remington 870
    TacStar Extended Shotgun Magazine Tube for Remington 870
    Out of stock
    $74.99 $79.99 $51.99 $54.99 Save $25.00
  9. Mec-Gar Plus-2 Adapter Set for Sig P320 Pistols
    Mec-Gar Plus-2 Adapter Set for Sig P320 Pistols
    Out of stock
    $12.99 $8.99 Save $4.00
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