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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. Lancer L5AWM Plus 6-round Extended Magazine Basepad
    Lancer L5AWM Plus 6-round Extended Magazine Basepad
    (58)
    $24.99 $27.99 $22.99 $25.99 Save $2.00
  2. Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols
    Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols
    (3)
    $39.99 $35.99 $36.99 Save $4.00
  3. Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols
    Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols
    (13)
    $39.99 $35.99 Save $4.00
  4. Strike Industries Aluminum +4 / +5 Magazine Extension for Glock 17 / 22 Pistols
    Strike Industries Aluminum +4 / +5 Magazine Extension for Glock 17 / 22 Pistols
    $38.99 $43.99 $35.99 $39.99 Save $4.00
  5. Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols
    Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols
    (22)
    $39.99 $33.99 $35.99 Save $6.00
  6. Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols
    Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols
    $39.99 $35.99 Save $4.00
  7. Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols
    Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols
    (18)
    $39.99 $35.99 Save $4.00
  9. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate
    $33.99 $36.99 $20.99 $23.99 Save $13.00
  10. Shield Arms S15 +5 Magazine Extension
    Shield Arms S15 +5 Magazine Extension
    (3)
    $39.99 $34.99 $35.99 Save $5.00
  11. Tyrant Designs 9mm +5 Magazine Extension for Springfield Echelon Pistols
    Tyrant Designs 9mm +5 Magazine Extension for Springfield Echelon Pistols
    (4)
    $39.99 $32.99 $35.99 Save $7.00
  12. Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols
    Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols
    (5)
    $38.99 $39.99 $35.99 $37.99 Save $4.00
  13. Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols
    Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols
    (1)
    $47.99 $49.99 $29.99 $39.99 Save $20.00
  14. Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    $35.99 $39.99 $33.99 $37.99 Save $2.00
  16. 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
  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. Tyrant Designs +3 Magazine Extension for Glock 43 Pistol Magazines
    Tyrant Designs +3 Magazine Extension for Glock 43 Pistol Magazines
    (16)
    $34.99 $26.99 $31.99 Save $8.00
  21. 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
  23. Odin Works +5 Magazine Extension for Sig Sauer P320 Pistols
    Odin Works +5 Magazine Extension for Sig Sauer P320 Pistols
    $35.99 $39.99 $33.99 $38.99 Save $2.00
  24. Tyrant Designs +3 Magazine Extension for Sig Sauer P365 X-Macro Pistols
    Tyrant Designs +3 Magazine Extension for Sig Sauer P365 X-Macro Pistols
    (7)
    $37.99 $39.99 $34.99 $35.99 Save $4.00
  25. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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. 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
  35. Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate
    Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate
    (1)
    $49.99 $29.99 $31.99 Save $20.00
  36. Warne Scope Mounts +3 / +2 Extended Base Pad for Glock 19 / 23
    Warne Scope Mounts +3 / +2 Extended Base Pad for Glock 19 / 23
    (3)
    $39.99 $29.99 $34.99 Save $10.00
  38. Tyrant Designs +1 Magazine Extension for Glock 43 Pistols
    Tyrant Designs +1 Magazine Extension for Glock 43 Pistols
    $29.95 $29.99 $19.99 $26.99 Save $10.00
  39. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate
    $33.99 $36.99 $20.99 $21.99 Save $15.00
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