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Inventory
  1. In Stock 140 items
  2. Out of Stock 25 items
Customer Rating
  1. 5
    40 items
  2. 4
    & up     70 items
  3. 3
    & up     82 items
  4. 2
    & up     88 items

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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  2. Lancer Systems LSX Extended Shotgun Magazine Tube for Beretta 1301 Shotguns
    Lancer Systems LSX Extended Shotgun Magazine Tube for Beretta 1301 Shotguns
    $97.99 $135.99 $66.99 $82.99 Save $56.00
  3. 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
  8. 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
  11. Kel-Tec P11 Grip Extension
    Kel-Tec P11 Grip Extension
    (37)
    $7.99
  14. 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
  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
  27. Lancer Systems LSX Extended Shotgun Magazine Tube for Benelli Shotguns
    Lancer Systems LSX Extended Shotgun Magazine Tube for Benelli Shotguns
    $98.99 $137.99 $64.99 $84.99 Save $53.00
  28. Lancer Systems LSX Extended Shotgun Magazine Tube for Mossberg 590 / 835 Shotguns
    Lancer Systems LSX Extended Shotgun Magazine Tube for Mossberg 590 / 835 Shotguns
    $97.99 $135.99 $62.99 $79.99 Save $56.00
  29. Lancer Systems LSX Extended Shotgun Magazine Tube for Remington Shotguns
    Lancer Systems LSX Extended Shotgun Magazine Tube for Remington Shotguns
    $97.99 $135.99 $66.99 $79.99 Save $56.00
  31. Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    Odin Works +5 Magazine Extension for Glock 17 / 22 Pistols
    (1)
    $39.99 $37.99 Save $2.00
  32. Odin Works +5 Magazine Extension for Sig Sauer P320 Pistols
    Odin Works +5 Magazine Extension for Sig Sauer P320 Pistols
    (1)
    $39.99 $38.99 Save $1.00
  33. 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
    $39.99 $37.99 Save $2.00
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