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  1. American Tactical Imports 1 item
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  18. Shield Arms 7 items
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  20. TangoDown Inc. 2 items
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  2. 12 Gauge 1 item
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  13. 40-Round 1 item
Material
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Inventory
  1. In Stock 140 items
  2. Out of Stock 26 items
Customer Rating
  1. 5
    33 items
  2. 4
    & up     59 items
  3. 3
    & up     71 items
  4. 2
    & up     76 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 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
  4. Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols
    Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols
    (1)
    $39.99 $35.99 Save $4.00
  5. Strike Industries +5 Magazine Extension for PMAG Gen M3
    Strike Industries +5 Magazine Extension for PMAG Gen M3
    $12.99
  6. 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
  7. Tyrant Designs +3 Magazine Extension for Glock 43 Pistol Magazines
    Tyrant Designs +3 Magazine Extension for Glock 43 Pistol Magazines
    (16)
    $34.99 $22.99 $31.99 Save $12.00
  8. Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols
    Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols
    (1)
    $47.99 $49.99 $29.99 $39.99 Save $20.00
  12. Shield Arms S15 +5 Magazine Extension
    Shield Arms S15 +5 Magazine Extension
    (3)
    $39.99 $34.99 $35.99 Save $5.00
  15. Kel-Tec PF9 One Round Extension
    Kel-Tec PF9 One Round Extension
    (39)
    $22.99 $12.99 $16.99 Save $10.00
  16. Timber Creek Outdoors Magazine Extension for Gen 4 / Gen 5 Glock 17, 19, and 34 Magazines
    Timber Creek Outdoors Magazine Extension for Gen 4 / Gen 5 Glock 17, 19, and 34 Magazines
    (2)
    $49.99 $26.99 $29.99 Save $23.00
  19. Strike Industries +5 Extended Magazine Plate for Sig Sauer P320 Pistols
    Strike Industries +5 Extended Magazine Plate for Sig Sauer P320 Pistols
    $47.99
  21. Tyrant Designs S&W M&P Shield +2 Aluminum Magazine Extension
    Tyrant Designs S&W M&P Shield +2 Aluminum Magazine Extension
    (19)
    $29.99 $19.99 $26.99 Save $10.00
  23. Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate
    Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate
    (1)
    $49.99 $25.99 $31.99 Save $24.00
  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
  27. 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
  31. Shield Arms +5 Magazine Extension for Magpul Gen 3 AR-15 PMAGs
    Shield Arms +5 Magazine Extension for Magpul Gen 3 AR-15 PMAGs
    $43.99
  40. Lancer Systems LSX Extended Shotgun Magazine Tube for Beretta 1301 Shotguns
    Lancer Systems LSX Extended Shotgun Magazine Tube for Beretta 1301 Shotguns
    $97.99 $135.99 $66.99 $82.99 Save $56.00
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