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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. KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines - BLK
    KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines
    (59)
    $32.99

    Add to Cart to See Price.

    $25.99 Save $7.00
  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. KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines 3-Pack - BLK
    KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines 3-Pack
    (8)
    $85.99

    Add to Cart to See Price.

    $67.99 Save $18.00
  6. Strike Industries +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 $37.99 $39.99 Save $4.00
  7. 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 $34.99 $35.99 Save $5.00
  9. Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols - BLK
    Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols
    (4)
    $38.99 $39.99 $36.99 $37.99 Save $3.00
  10. 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
  15. 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
  16. Shadow Systems CR920X +3 Magazine Extension Kit
    Shadow Systems CR920X +3 Magazine Extension Kit
    Out of stock
    $30.99 $25.99 Save $5.00
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