My Cart ()
Back Close
Filters
Now Shopping by
  1. Capacity
    4-Round
Brand
  1. Ghost Inc 2 items
  2. Lancer Systems 4 items
  3. Tyrant Designs 1 item
Color
  1. Black 3 items
  2. Blue 1 item
  3. Gold 1 item
  4. Gray 1 item
  5. Red 1 item
Platform
  1. Benelli 1 item
  2. Beretta 1 item
  3. Glock 3 items
  4. Mossberg 1 item
  5. Remington 1 item
  6. Shotgun 4 items
Capacity
  1. 1-Round 2 items
  2. 2-Round 14 items
  3. 3-Round 7 items
  4. 4-Round 7 items
  5. 5-Round 21 items
  6. 6-Round 6 items
  7. 7-Round 4 items
  8. 8-Round 4 items
  9. 9-Round 1 item
  10. 10-Round 1 item
  11. 17-Round 2 items
  12. 18-Round 2 items
  13. 23-Round 2 items
  14. 40-Round 1 item
Material
  1. Aluminum 1 item
  2. Carbon Fiber / Aluminum 4 items
Inventory
  1. In Stock 7 items
Customer Rating
  1. 5
    2 items
  2. 4
    & up     3 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!

  1. Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols
    Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols
    (17)
    $39.99 $35.99 Save $4.00
  3. 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 $67.99 $84.99 Save $51.00
  4. 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 $67.99 $84.99 Save $51.00
  6. Lancer Systems LSX Extended Shotgun Magazine Tube for Benelli Shotguns
    Lancer Systems LSX Extended Shotgun Magazine Tube for Benelli Shotguns
    $98.99 $137.99 $67.99 $84.99 Save $53.00
  7. Lancer Systems LSX Extended Shotgun Magazine Tube for Remington Shotguns
    Lancer Systems LSX Extended Shotgun Magazine Tube for Remington Shotguns
    $97.99 $135.99 $67.99 $84.99 Save $51.00
Filter