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  1. Apex Tactical 1 item
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  19. TangoDown Inc. 2 items
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  24. Winchester 2 items
Caliber
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  2. 12 Gauge 1 item
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  4. 300 AAC Blackout 1 item
  5. 380 Auto (ACP) 1 item
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  9. 5.7 x 28mm 1 item
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Capacity
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  2. 2-Round 13 items
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  14. 40-Round 1 item
Material
  1. Aluminum 42 items
  2. Brass 1 item
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  4. Polymer 51 items
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Inventory
  1. In Stock 133 items
  2. Out of Stock 29 items
Customer Rating
  1. 5
    31 items
  2. 4
    & up     56 items
  3. 3
    & up     67 items
  4. 2
    & up     72 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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  3. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate
    $33.99 $36.99 $20.99 $23.99 Save $13.00
  5. Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 19 / 23
    Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 19 / 23
    (1)
    $49.99 $29.99 $39.99 Save $20.00
  13. Kel-Tec PF9 One Round Extension
    Kel-Tec PF9 One Round Extension
    (39)
    $22.99 $12.99 $16.99 Save $10.00
  15. Lancer Systems LSX Extended Shotgun Magazine Tube for Mossberg 590 / 835 Shotguns
    Lancer Systems LSX Extended Shotgun Magazine Tube for Mossberg 590 / 835 Shotguns
    $97.99 $135.99 $67.99 $84.99 Save $51.00
  19. Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate
    Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate
    (1)
    $49.99 $29.99 $31.99 Save $20.00
  20. Tyrant Designs +2 Magazine Extension for Glock 43 Pistols
    Tyrant Designs +2 Magazine Extension for Glock 43 Pistols
    $32.99 $20.99 $28.99 Save $12.00
  21. Tyrant Designs +3 Magazine Extension for Glock 43 Pistol Magazines
    Tyrant Designs +3 Magazine Extension for Glock 43 Pistol Magazines
    (16)
    $34.99 $26.99 $31.99 Save $8.00
  22. Odin Works 9mm / .40 SW +5/4 Magazine Extension for Smith & Wesson M&P Pistols
    Odin Works 9mm / .40 SW +5/4 Magazine Extension for Smith & Wesson M&P Pistols
    $35.99 $39.99 $33.99 $37.99 Save $2.00
  23. Strike Industries +5 Extended Magazine Plate for Sig Sauer P320 Pistols
    Strike Industries +5 Extended Magazine Plate for Sig Sauer P320 Pistols
    $41.99 $39.99 Save $2.00
  24. Walther Taylor Freelance +6 Competition 9mm / .40cal Magazine Extension for PPQ Pistols
    Walther Taylor Freelance +6 Competition 9mm / .40cal Magazine Extension for PPQ Pistols
    $60.99 $34.99 Save $26.00
  28. Odin Works +5 Magazine Extension for Sig Sauer P320 Pistols
    Odin Works +5 Magazine Extension for Sig Sauer P320 Pistols
    $35.99 $39.99 $33.99 $38.99 Save $2.00
  32. Walther Taylor Freelance +0 Competition 9mm / .40cal Magazine Extension for PPQ Pistols
    Walther Taylor Freelance +0 Competition 9mm / .40cal Magazine Extension for PPQ Pistols
    (1)
    $30.99 $35.99 $25.99 Save $10.00
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