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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. Strike Industries +4/+5 Magazine Extension for Glock 17 / 22 Pistols
    Strike Industries Aluminum +4 / +5 Magazine Extension for Glock 17 / 22 Pistols
    (2)
    $38.99 $43.99 $35.99 $39.99 Save $4.00
  2. Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols - Black
    Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols
    (13)
    $39.99 $35.99 Save $4.00
  3. Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols - BLK
    Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols
    (3)
    $39.99 $35.99 $36.99 Save $4.00
  4. Tyrant Designs Magazine Extension for Glock 19 / 23 Pistols - BLK
    Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols
    (22)
    $39.99 $33.99 $35.99 Save $6.00
  5. Lancer L5AWM +6 Extended Magazine Basepad Right
    Lancer L5AWM Plus 6-round Extended Magazine Basepad
    (59)
    $24.99 $27.99 $23.99 $25.49 Save $2.50
  6. Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols - BLK
    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 - BLK
    Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols
    (18)
    $39.99 $35.99 Save $4.00
  8. Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols - BLK
    Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols
    (5)
    $38.99 $39.99 $35.99 $37.99 Save $4.00
  9. Shield Arms Magazine Extension +5 for S15 Magazines for Glock 43X / 48 Pistols
    Shield Arms S15 +5 Magazine Extension
    (3)
    $39.99 $34.99 $35.99 Save $5.00
  11. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate - BLK
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate
    $33.99 $36.99 $21.99 Save $15.00
  13. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate - BLK
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate
    (1)
    $33.99 $36.99 $20.99 $23.99 Save $13.00
  14. Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 19 / 23 - Black
    Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 19 / 23
    (1)
    $49.99 $29.99 $39.99 Save $20.00
  15. Strike Industries +5 Extended Magazine Plate for Sig Sauer P320 Pistols - BLK
    Strike Industries +5 Extended Magazine Plate for Sig Sauer P320 Pistols
    $41.99 $39.99 Save $2.00
  16. Tyrant Designs Glock 43 +2 Magazine Extension (BLACK) Right
    Tyrant Designs +2 Magazine Extension for Glock 43 Pistols
    $32.99 $20.99 $28.99 Save $12.00
  17. Walther Taylor Freelance +6 Competition 9mm / .40cal Magazine Extension for PPQ Pistols - BLK
    Walther Taylor Freelance +6 Competition 9mm / .40cal Magazine Extension for PPQ Pistols
    $60.99 $34.99 Save $26.00
  18. Walther Taylor Freelance +0 Competition 9mm / .40cal Magazine Extension for PPQ Pistols - BLK
    Walther Taylor Freelance +0 Competition 9mm / .40cal Magazine Extension for PPQ Pistols
    (1)
    $30.99 $35.99 $25.99 Save $10.00
  20. Odin Works 9mm / .40 SW +5/4 Magazine Extension for Smith & Wesson M&P Pistols - Black
    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
  21. Tyrant Designs S&W M&P Shield Plus 2 Aluminum Magazine Extension Black Left View
    Tyrant Designs S&W M&P Shield +2 Aluminum Magazine Extension
    (19)
    $29.99 $19.99 $26.99 Save $10.00
  22. Warne Scope Mounts Extended Base Pad For Glock 19/23 +3/2 Black (Right)
    Warne Scope Mounts +3 / +2 Extended Base Pad for Glock 19 / 23
    (3)
    $39.99 $29.99 $34.99 Save $10.00
  23. Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate - BLK
    Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate
    (1)
    $49.99 $29.99 $31.99 Save $20.00
  24. Backup Tactical +5 Magazine Extension for Glock 19 / 23 Pistols - BLK
    Backup Tactical +5 Magazine Extension for Glock 19 / 23 Pistols
    (1)
    $59.99 $54.99 Save $5.00
  25. Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols - Black
    Warne Scope Mounts +5 Extended Base Pad for Sig Sauer P320 Pistols
    (1)
    $47.99 $49.99 $29.99 $39.99 Save $20.00
  27. Tyrant Designs Glock 43 +3 Magazine Extension (BLACK) Right
    Tyrant Designs +3 Magazine Extension for Glock 43 Pistol Magazines
    (16)
    $34.99 $26.99 $31.99 Save $8.00
  28. Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols - Black
    Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    (1)
    $35.99 $39.99 $33.99 $37.99 Save $2.00
  31. Tyrant Designs Glock 43 +1 Magazine Extension (BLACK) Right
    Tyrant Designs +1 Magazine Extension for Glock 43 Pistols
    $29.95 $29.99 $19.99 $26.99 Save $10.00
  32. Warne 9mm +2 Magazine Extension for Glock 43
    Warne 9mm +2 Magazine Extension for Glock 43
    Coupon Available
    $39.99 $34.99 Save $5.00
  33. Odin Works +5 Magazine Extension for Sig Sauer P320 Pistols - Black
    Odin Works +5 Magazine Extension for Sig Sauer P320 Pistols
    (1)
    $35.99 $39.99 $33.99 $38.99 Save $2.00
  39. Warne 9mm / 40 +3 / 2 Magazine Extension for S&W M&P
    Warne 9mm / 40 +3 / 2 Magazine Extension for S&W M&P
    Out of stock
    $39.99 $34.99 Save $5.00
  40. Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 17 / 22 - Black
    Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 17 / 22
    Out of stock
    (3)
    $49.99 $39.99 Save $10.00
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