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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. Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols - Gray
    Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols
    (3)
    $39.99 $35.99 $36.99 Save $4.00
  2. Tyrant Designs 9mm +5 Magazine Extension for Springfield Echelon Pistols - Grey
    Tyrant Designs 9mm +5 Magazine Extension for Springfield Echelon Pistols
    (4)
    $39.99 $32.99 $35.99 Save $7.00
  3. Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 19 / 23 - Gray
    Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 19 / 23
    $49.99 $29.99 $39.99 Save $20.00
  4. Tyrant Designs Magazine Extension for Glock 19 / 23 Pistols - GRY
    Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols
    (22)
    $39.99 $33.99 $35.99 Save $6.00
  5. Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols - GRY
    Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols
    (17)
    $39.99 $35.99 Save $4.00
  6. Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols - Gray
    Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols
    (1)
    $47.99 $49.99 $29.99 $39.99 Save $20.00
  7. Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols - Gray
    Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols
    $39.99 $34.99 $35.99 Save $5.00
  8. Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols - Gray
    Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols
    (12)
    $39.99 $35.99 Save $4.00
  9. Tyrant Designs +2 Magazine Extension for Glock 43 Pistols - GRY
    Tyrant Designs +2 Magazine Extension for Glock 43 Pistols
    $32.99 $20.99 $28.99 Save $12.00
  10. Tyrant Designs Glock 43 +3 Magazine Extension (GREY) Right
    Tyrant Designs +3 Magazine Extension for Glock 43 Pistol Magazines
    (16)
    $34.99 $26.99 $31.99 Save $8.00
  11. Tyrant Designs S&W M&P Shield Plus 2 Aluminum Magazine Extension Gray Left View
    Tyrant Designs S&W M&P Shield +2 Aluminum Magazine Extension
    (19)
    $29.99 $19.99 $26.99 Save $10.00
  12. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate - Gray
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate
    $33.99 $36.99 $20.99 $23.99 Save $13.00
  13. Tyrant Designs Glock 43 +1 Magazine Extension (GREY)
    Tyrant Designs +1 Magazine Extension for Glock 43 Pistols
    $29.95 $29.99 $19.99 $26.99 Save $10.00
  14. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate - Gray
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate
    $33.99 $36.99 $20.99 $21.99 Save $15.00
  15. Tyrant Designs +3 Magazine Extension for Sig Sauer P365 X-Macro Pistols - GRY
    Tyrant Designs +3 Magazine Extension for Sig Sauer P365 X-Macro Pistols
    (7)
    $37.99 $39.99 $34.99 $35.99 Save $4.00
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