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  14. 40-Round 1 item
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Inventory
  1. In Stock 131 items
  2. Out of Stock 31 items
Customer Rating
  1. 5
    38 items
  2. 4
    & up     66 items
  3. 3
    & up     76 items
  4. 2
    & up     82 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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  10. 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
  11. 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
  12. 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
  13. 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
  16. Strike Industries +5 Extended Magazine Plate for Sig Sauer P320 Pistols
    Strike Industries +5 Extended Magazine Plate for Sig Sauer P320 Pistols
    $41.99 $39.99 Save $2.00
  17. Panzer Arms +2 Extended Magazine Tube for 12GA Panzer / Benelli M4 Shotguns
    Panzer Arms +2 Extended Magazine Tube for 12GA Panzer / Benelli M4 Shotguns
    (25)
    $26.99 $27.99 $18.99 $22.99 Save $9.00
  19. Tyrant Designs +2 Magazine Extension for Glock 43 Pistols
    Tyrant Designs +2 Magazine Extension for Glock 43 Pistols
    $32.99 $20.99 $28.99 Save $12.00
  20. 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
  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. Lancer Systems LSX Extended Shotgun Magazine Tube for Mossberg 590 / 835 Shotguns
    Lancer Systems LSX Extended Shotgun Magazine Tube for Mossberg 590 / 835 Shotguns
    $97.99 $135.99 $67.99 $84.99 Save $51.00
  24. Odin Works 9mm / .40 SW +5/4 Magazine Extension for Smith & Wesson M&P Pistols
    Odin Works 9mm / .40 SW +5/4 Magazine Extension for Smith & Wesson M&P Pistols
    $35.99 $39.99 $33.99 $37.99 Save $2.00
  25. 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
  29. 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
  32. 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
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