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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. Lancer L5AWM Plus 6-round Extended Magazine Basepad (RED)
    Lancer L5AWM Plus 6-round Extended Magazine Basepad
    (57)
    $24.99 $27.99 $22.99 $25.99 Save $2.00
  2. Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols - Red
    Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols
    (3)
    $39.99 $35.99 $36.99 Save $4.00
  3. Strike Industries Aluminum +4 / +5 Magazine Extension for Glock 17 / 22 Pistols - Red
    Strike Industries Aluminum +4 / +5 Magazine Extension for Glock 17 / 22 Pistols
    $38.99 $43.99 $37.99 $39.99 Save $4.00
  4. Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols-Red
    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 +5 Magazine Extension for Springfield Echelon Pistols - Red
    Tyrant Designs 9mm +5 Magazine Extension for Springfield Echelon Pistols
    (4)
    $39.99 $32.99 $35.99 Save $7.00
  6. Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 19 / 23 - Red
    Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 19 / 23
    $49.99 $29.99 $39.99 Save $20.00
  7. Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols - Red
    Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols
    (1)
    $47.99 $49.99 $29.99 $39.99 Save $20.00
  8. Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols - Red
    Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols
    $39.99 $34.99 $35.99 Save $5.00
  9. Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols - Red
    Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols
    (17)
    $39.99 $35.99 Save $4.00
  10. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate - Red
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate
    $33.99 $36.99 $20.99 $23.99 Save $13.00
  11. Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols - Red
    Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols
    (12)
    $39.99 $35.99 Save $4.00
  12. Shield Arms S15 +5 Magazine Extension - Red
    Shield Arms S15 +5 Magazine Extension
    (3)
    $39.99 $34.99 $35.99 Save $5.00
  13. Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate - RED
    Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate
    (1)
    $49.99 $29.99 $31.99 Save $20.00
  14. Tyrant Designs +2 Magazine Extension for Glock 43 Pistols - RED
    Tyrant Designs +2 Magazine Extension for Glock 43 Pistols
    $32.99 $20.99 $28.99 Save $12.00
  15. Tyrant Designs Glock 43 +3 Magazine Extension (RED) Right
    Tyrant Designs +3 Magazine Extension for Glock 43 Pistol Magazines
    (16)
    $34.99 $26.99 $31.99 Save $8.00
  16. Odin Works 9mm / .40 SW +5/4 Magazine Extension for Smith & Wesson M&P Pistols - Red
    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
  17. Odin Works +5 Magazine Extension for Sig Sauer P320 Pistols - Red
    Odin Works +5 Magazine Extension for Sig Sauer P320 Pistols
    $35.99 $39.99 $33.99 $38.99 Save $2.00
  18. Warne Scope Mounts +3 / +2 Extended Base Pad for Glock 17 / 22 - Red
    Warne Scope Mounts +3 / +2 Extended Base Pad for Glock 17 / 22
    (1)
    $39.99 $29.99 Save $10.00
  19. Tyrant Designs S&W M&P Shield Plus 2 Aluminum Magazine Extension Red Left View
    Tyrant Designs S&W M&P Shield +2 Aluminum Magazine Extension
    (19)
    $29.99 $19.99 $26.99 Save $10.00
  20. Tyrant Designs Glock 43 +1 Magazine Extension (RED) Right
    Tyrant Designs +1 Magazine Extension for Glock 43 Pistols
    $29.95 $29.99 $19.99 $26.99 Save $10.00
  21. Backup Tactical +5 Magazine Extension for Glock 19 / 23 Pistols - Red
    Backup Tactical +5 Magazine Extension for Glock 19 / 23 Pistols
    (1)
    $59.99 $54.99 Save $5.00
  22. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate - Red
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate
    $33.99 $36.99 $20.99 $21.99 Save $15.00
  23. Timber Creek Outdoors Sig Sauer P365 Magazine Extension Plate - RED
    Timber Creek Outdoors Sig Sauer P365 Magazine Extension Plate
    Out of stock
    $49.99 $29.99 Save $20.00
  24. Odin Works Magpul GL9 Glock 17 / 19 / 26 Magazine Base Pad - Red
    Odin Works Magpul GL9 Glock 17 / 19 / 26 Magazine Base Pad
    Out of stock
    $35.99 $33.99 Save $2.00
  25. Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols - Red
    Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    $35.99 $39.99 $33.99 $37.99 Save $2.00
  26. Tyrant Designs +3 Magazine Extension for Sig Sauer P365 X-Macro Pistols - RED
    Tyrant Designs +3 Magazine Extension for Sig Sauer P365 X-Macro Pistols
    (7)
    $37.99 $39.99 $34.99 $35.99 Save $4.00
  27. Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 17 / 22 - Red
    Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 17 / 22
    (3)
    $49.99 $39.99 Save $10.00
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