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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. 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 $20.99 $21.99 Save $15.00
  3. TangoDown Vickers Tactical Glock G43 +2 Round Magazine Extension - BLK
    TangoDown Vickers Tactical +2 Round Magazine Extension for Glock G43 Magazines
    (1)
    $16.99
  7. Mec-Gar +2 Magazine Extension for Glock 17 / 19 Pistols - Black
    Mec-Gar +2 Magazine Extension for Glock 17 / 19 Pistols
    Out of stock
    $16.99 $10.99 Save $6.00
  9. Shadow Systems CR920X +3 Magazine Extension Kit
    Shadow Systems CR920X +3 Magazine Extension Kit
    Out of stock
    $30.99 $25.99 Save $5.00
  10. 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
  11. Warne 9mm +4 Magazine Extension for CZ 75
    Warne 9mm +4 Magazine Extension for CZ 75
    Out of stock
    (1)
    $39.99 $29.99 Save $10.00
  16. Timber Creek Outdoors Sig Sauer P365 Magazine Extension Plate - BLK
    Timber Creek Outdoors Sig Sauer P365 Magazine Extension Plate
    Out of stock
    $49.99 $29.99 Save $20.00
  17. Odin Works Magpul GL9 Glock 17 / 19 / 26 Magazine Base Pad - Black
    Odin Works Magpul GL9 Glock 17 / 19 / 26 Magazine Base Pad
    Out of stock
    $35.99 $33.99 Save $2.00
  18. Warne 9mm +3 Magazine Extension for CZ 75
    Warne 9mm +3 Magazine Extension for CZ 75
    Out of stock
    $39.99 $29.99 Save $10.00
  20. Walther Q-Series +2 Steel Extended Baseplate
    Walther Q-Series +2 Steel Extended Baseplate
    Out of stock
    $80.99 $73.99 Save $7.00
  32. Walther +2 Aluminum 9mm Magazine Extension for PPQ Pistols - BLK
    Walther +2 Aluminum 9mm Magazine Extension for PPQ Pistols
    Out of stock
    $60.99 $44.99 $46.99 Save $16.00
  33. Mec-Gar Drop Protection System Plus-2 Adapter
    Mec-Gar Drop Protection System Plus-2 Adapter
    Out of stock
    $12.99 $8.99 Save $4.00
  34. Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols - Black
    Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    $35.99 $39.99 $33.99 $37.99 Save $2.00
  36. Tyrant Designs +3 Magazine Extension for Sig Sauer P365 X-Macro Pistols - BLK
    Tyrant Designs +3 Magazine Extension for Sig Sauer P365 X-Macro Pistols
    (7)
    $37.99 $39.99 $34.99 $35.99 Save $4.00
  37. 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
    (3)
    $49.99 $39.99 Save $10.00
  38. TacStar Extended Shotgun Magazine Tube for Remington 870
    TacStar Extended Shotgun Magazine Tube for Remington 870
    Out of stock
    $74.99 $79.99 $51.99 $54.99 Save $25.00
  39. Mec-Gar Plus-2 Adapter Set for Sig P320 Pistols
    Mec-Gar Plus-2 Adapter Set for Sig P320 Pistols
    Out of stock
    $12.99 $8.99 Save $4.00
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