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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!

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  1. KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines - BLK
    KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines
    (59)
    $32.99

    Add to Cart to See Price.

    $25.99 Save $7.00
  3. KRISS MagEx 12+ Extension Kit for Glock 21 Magazine Complete Kit
    KRISS Vector Gen 2 .45 ACP +17 Round Magazine Extension Kit for Glock 21 Pistols
    (6)
    $32.99 $28.99 $29.69 Save $4.00
  6. 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
    (8)
    $85.99

    Add to Cart to See Price.

    $67.99 Save $18.00
  7. Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols - BLK
    Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols
    (3)
    $39.99 $35.99 $36.99 Save $4.00
  9. 3 Pack - KRISS Vector Gen 2 .45 ACP +17 Round Magazine Extension Kit (BLK) for Glock Magazines
    3 Pack - KRISS Vector Gen 2 .45 ACP +17 Round Magazine Extension Kit for Glock Magazines
    (25)
    $85.99

    Add to Cart to See Price.

    $67.99 Save $18.00
  10. Strike Industries +4/+5 Magazine Extension for Glock 17 / 22 Pistols
    Strike Industries Aluminum +4 / +5 Magazine Extension for Glock 17 / 22 Pistols
    $38.99 $43.99 $37.99 $39.99 Save $4.00
  12. 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
  16. Tyrant Designs Magazine Extension for Glock 19 / 23 Pistols - BLK
    Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols
    (22)
    $39.99 $33.99 $35.99 Save $6.00
  17. 3 Pack - KRISS Vector Gen 2 10mm +18 Round Magazine Extension Kit (BLK) for Glock Magazines
    KRISS Vector Gen 2 10mm +18 Round Magazine Extension Kit for Glock Magazines 3-Pack
    (13)
    $85.99 $87.99

    Add to Cart to See Price.

    $67.99 Save $20.00
  19. 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
    $49.99 $29.99 $39.99 Save $20.00
  20. Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols - BLK
    Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols
    $39.99 $34.99 $35.99 Save $5.00
  21. Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols - BLK
    Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols
    (17)
    $39.99 $35.99 Save $4.00
  27. Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols - Black
    Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols
    (12)
    $39.99 $35.99 Save $4.00
  29. Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols - BLK
    Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols
    (4)
    $38.99 $39.99 $36.99 $37.99 Save $3.00
  31. Timber Creek Outdoors Magazine Extension for Gen 4 / Gen 5 17, 19, and 34 Pistols - Black
    Timber Creek Outdoors Magazine Extension for Gen 4 / Gen 5 Glock 17, 19, and 34 Magazines
    (2)
    $49.99 $29.99 $31.99 Save $20.00
  32. 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
  35. Tyrant Designs Glock 43 +2 Magazine Extension (BLACK) Right
    Tyrant Designs +2 Magazine Extension for Glock 43 Pistols
    $32.99 $20.99 $28.99 Save $12.00
  36. Tyrant Designs Glock 43 +3 Magazine Extension (BLACK) Right
    Tyrant Designs +3 Magazine Extension for Glock 43 Pistol Magazines
    (16)
    $34.99 $26.99 $31.99 Save $8.00
  39. 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
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