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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!

  1. Mec-Gar +2 Magazine Extension for Glock 17 / 19 Pistols
    Mec-Gar +2 Magazine Extension for Glock 17 / 19 Pistols
    (2)
    $16.99 $9.99 $10.99 Save $7.00
  3. Strike Industries Aluminum +4 / +5 Magazine Extension for Glock 17 / 22 Pistols
    Strike Industries Aluminum +4 / +5 Magazine Extension for Glock 17 / 22 Pistols
    (2)
    $38.99 $43.99 $35.99 $39.99 Save $4.00
  4. Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols
    Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols
    (22)
    $39.99 $33.99 $35.99 Save $6.00
  5. 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
  6. Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols
    Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols
    (3)
    $39.99 $35.99 $36.99 Save $4.00
  7. 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
    (9)
    $85.99

    Add to Cart to See Price.

    $67.99 Save $18.00
  12. Shield Arms S15 +5 Magazine Extension
    Shield Arms S15 +5 Magazine Extension
    (3)
    $39.99 $34.99 $35.99 Save $5.00
  13. Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols
    Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols
    (5)
    $38.99 $39.99 $35.99 $37.99 Save $4.00
  18. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate
    (1)
    $33.99 $36.99 $20.99 $23.99 Save $13.00
  20. 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
  21. 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
  22. Warne Scope Mounts +3 / +2 Extended Base Pad for Glock 17 / 22
    Warne Scope Mounts +3 / +2 Extended Base Pad for Glock 17 / 22
    (1)
    $39.99 $29.99 Save $10.00
  23. Warne Scope Mounts +3 / +2 Extended Base Pad for Glock 19 / 23
    Warne Scope Mounts +3 / +2 Extended Base Pad for Glock 19 / 23
    (3)
    $39.99 $29.99 $34.99 Save $10.00
  24. 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
  26. 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
  27. 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
  29. 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
  30. Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    (1)
    $35.99 $39.99 $33.99 $37.99 Save $2.00
  35. Shadow Systems CR920X +3 Magazine Extension Kit
    Shadow Systems CR920X +3 Magazine Extension Kit
    Out of stock
    (1)
    $30.99 $25.99 Save $5.00
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