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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
    (64)
    $32.99

    Add to Cart to See Price.

    $25.99 Save $7.00
  3. Mec-Gar +2 Magazine Extension for Glock 17 / 19 Pistols - Black
    Mec-Gar +2 Magazine Extension for Glock 17 / 19 Pistols
    (2)
    $16.99 $9.99 $10.99 Save $7.00
  4. Strike Industries +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
  6. 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
    (11)
    $32.99 $28.99 $29.69 Save $4.00
  7. Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols - BLK
    Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols
    (4)
    $39.99 $35.99 $36.99 Save $4.00
  8. 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
    (26)
    $85.99

    Add to Cart to See Price.

    $67.99 Save $18.00
  9. 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
    (13)
    $39.99 $35.99 Save $4.00
  10. Lancer L5AWM +6 Extended Magazine Basepad Right
    Lancer L5AWM Plus 6-round Extended Magazine Basepad
    (59)
    $24.99 $27.99 $23.99 $25.49 Save $2.50
  11. 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
    (9)
    $85.99

    Add to Cart to See Price.

    $67.99 Save $18.00
  12. 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
  13. 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
  15. Die Free Co Dos Boot +2 Magazine Extension for Magpul Gen3 AR-15 PMAGs 3-Pack - BLK
    Die Free Co Dos Boot +2 Magazine Extension for Magpul Gen3 AR-15 PMAGs 3-Pack
    (3)
    $20.99
  17. Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols - BLK
    Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols
    (18)
    $39.99 $35.99 Save $4.00
  19. 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
  20. Panzer Arms +2 Extended Magazine Tube for 12GA Panzer / Benelli M4 Shotguns - BLK
    Panzer Arms +2 Extended Magazine Tube for 12GA Panzer / Benelli M4 Shotguns
    (25)
    $26.99 $27.99 $18.99 $22.99 Save $9.00
  22. 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 $35.99 Save $4.00
  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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