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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 9mm +5 Magazine Extension for Springfield Echelon Pistols - Blue
    Tyrant Designs 9mm +5 Magazine Extension for Springfield Echelon Pistols
    (4)
    $39.99 $32.99 $35.99 Save $7.00
  2. Tyrant Designs Magazine Extension for Glock 19 / 23 Pistols - BLUE
    Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols
    (22)
    $39.99 $33.99 $35.99 Save $6.00
  3. Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols - BLUE
    Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols
    (17)
    $39.99 $35.99 Save $4.00
  4. Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols - Blue
    Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols
    (1)
    $47.99 $49.99 $29.99 $39.99 Save $20.00
  5. Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols-Blue
    Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols
    (12)
    $39.99 $35.99 Save $4.00
  6. Timber Creek Outdoors Magazine Extension for Gen 4 / Gen 5 17, 19, and 34 Pistols - Blue
    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
  7. Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate - BLUE
    Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate
    (1)
    $49.99 $29.99 $31.99 Save $20.00
  8. Walther Taylor Freelance +6 Competition 9mm / .40cal Magazine Extension for PPQ Pistols - BLUE
    Walther Taylor Freelance +6 Competition 9mm / .40cal Magazine Extension for PPQ Pistols
    $60.99 $34.99 Save $26.00
  9. Tyrant Designs +2 Magazine Extension for Glock 43 Pistols - BLUE
    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 (BLUE) 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 (BLUE)
    Tyrant Designs S&W M&P Shield +2 Aluminum Magazine Extension
    (19)
    $29.99 $19.99 $26.99 Save $10.00
  12. Odin Works +5 Magazine Extension for Sig Sauer P320 Pistols - Blue
    Odin Works +5 Magazine Extension for Sig Sauer P320 Pistols
    $35.99 $39.99 $33.99 $38.99 Save $2.00
  13. Odin Works 9mm / .40 SW +5/4 Magazine Extension for Smith & Wesson M&P Pistols - Blue
    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
  14. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate - Blue
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate
    $33.99 $36.99 $20.99 $23.99 Save $13.00
  15. Walther Taylor Freelance +0 Competition 9mm / .40cal Magazine Extension for PPQ Pistols - BLUE
    Walther Taylor Freelance +0 Competition 9mm / .40cal Magazine Extension for PPQ Pistols
    (1)
    $30.99 $35.99 $25.99 Save $10.00
  16. Tyrant Designs Glock 43 +1 Magazine Extension (BLUE) Right
    Tyrant Designs +1 Magazine Extension for Glock 43 Pistols
    $29.95 $29.99 $19.99 $26.99 Save $10.00
  17. Backup Tactical +5 Magazine Extension for Glock 19 / 23 Pistols - Blue
    Backup Tactical +5 Magazine Extension for Glock 19 / 23 Pistols
    (1)
    $59.99 $54.99 Save $5.00
  18. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate - Blue
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate
    $33.99 $36.99 $20.99 $21.99 Save $15.00
  19. Timber Creek Outdoors Sig Sauer P365 Magazine Extension Plate - BLUE
    Timber Creek Outdoors Sig Sauer P365 Magazine Extension Plate
    Out of stock
    $49.99 $29.99 Save $20.00
  20. Odin Works Magpul GL9 Glock 17 / 19 / 26 Magazine Base Pad - Blue
    Odin Works Magpul GL9 Glock 17 / 19 / 26 Magazine Base Pad
    Out of stock
    $35.99 $33.99 Save $2.00
  21. Walther +2 Aluminum 9mm Magazine Extension for PPQ Pistols - BLUE
    Walther +2 Aluminum 9mm Magazine Extension for PPQ Pistols
    Out of stock
    $60.99 $44.99 $46.99 Save $16.00
  22. Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols - Blue
    Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    $35.99 $39.99 $33.99 $37.99 Save $2.00
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