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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. Tyrant Designs Magazine Extension for Glock 19 / 23 Pistols - BLK
    Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols
    (23)
    $39.99 $29.99 Save $10.00
  2. Strike Industries +4/+5 Magazine Extension for Glock 17 / 22 Pistols
    Strike Industries Aluminum +4 / +5 Magazine Extension for Glock 17 / 22 Pistols
    (4)
    $38.99 $43.99 $35.99 $39.99 Save $4.00
  3. KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines 3-Pack - BLK
    KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines 3-Pack
    (10)
    $85.99

    Add to Cart to See Price.

    $67.99 Save $18.00
  4. KRISS Vector Gen 2 Glock 20 10mm 33-Round Magazine Extension Kit Full
    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
  5. Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols - BLK
    Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols
    (4)
    $39.99 $35.99 $36.99 Save $4.00
  6. Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols - BLK
    Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols
    (1)
    $39.99 $35.99 Save $4.00
  7. Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols - BLK
    Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols
    (5)
    $38.99 $39.99 $35.99 $37.99 Save $4.00
  13. Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 19 / 23 - Black
    Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 19 / 23
    (1)
    $49.99 $29.99 $39.99 Save $20.00
  17. Shield Arms Magazine Extension +5 for S15 Magazines for Glock 43X / 48 Pistols
    Shield Arms S15 +5 Magazine Extension
    (3)
    $39.99 $34.99 $35.99 Save $5.00
  18. Walther Taylor Freelance +0 Competition 9mm / .40cal Magazine Extension for PPQ Pistols - BLK
    Walther Taylor Freelance +0 Competition 9mm / .40cal Magazine Extension for PPQ Pistols
    (1)
    $30.99 $35.99 $25.99 Save $10.00
  19. Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols - Black
    Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols
    (1)
    $47.99 $49.99 $29.99 $39.99 Save $20.00
  20. Warne Scope Mounts Extended Base Pad For Glock 19/23 +3/2 Black (Right)
    Warne Scope Mounts +3 / +2 Extended Base Pad for Glock 19 / 23
    (3)
    $39.99 $29.99 $34.99 Save $10.00
  21. Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate - BLK
    Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate
    (1)
    $49.99 $25.99 $31.99 Save $24.00
  22. TangoDown Vickers Tactical Glock G43 +2 Round Magazine Extension - BLK
    TangoDown Vickers Tactical +2 Round Magazine Extension for Glock G43 Magazines
    (1)
    $16.99
  29. Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols - Black
    Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    (1)
    $39.99 $37.99 Save $2.00
  30. Backup Tactical +5 Magazine Extension for Glock 19 / 23 Pistols - BLK
    Backup Tactical +5 Magazine Extension for Glock 19 / 23 Pistols
    (1)
    $59.99 $54.99 Save $5.00
  33. Mec-Gar Plus-3 Adapter Set for Sig P228 Pistols
    Mec-Gar Plus-3 Adapter Set for Sig P228 Pistols
    Out of stock
    (1)
    $12.99 $9.49 Save $3.50
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