My Cart ()
Back Close
Filters
Now Shopping by
  1. Inventory
    In Stock
Brand
  1. American Tactical Imports 1 item
  2. Backup Tactical 1 item
  3. Carlson's Choke Tubes 25 items
  4. FAB Defense 1 item
  5. Ghost Inc 10 items
  6. Glock Magazines 1 item
  7. Kel-Tec 2 items
  8. Kimber 1 item
  9. KRISS USA 6 items
  10. Lancer Systems 6 items
  11. Mec-Gar 10 items
  12. Odin Works 3 items
  13. Pachmayr 1 item
  14. Panzer Arms 2 items
  15. Pearce Grip 7 items
  16. ProMag Magazines 2 items
  17. Shadow Systems 1 item
  18. Shield Arms 7 items
  19. Strike Industries 11 items
  20. TangoDown Inc. 2 items
  21. Taran Tactical Innovations 5 items
  22. Timber Creek Outdoors 2 items
  23. Tyrant Designs 9 items
  24. Walther 3 items
  25. Warne Scope Rings 10 items
  26. XTech Tactical 10 items
Color
  1. Aluminum 3 items
  2. Black 116 items
  3. Blue 12 items
  4. Brass 2 items
  5. Burnt Bronze 2 items
  6. Coyote Bronze 2 items
  7. Dark Earth 2 items
  8. Flat Black 4 items
  9. Flat Dark Earth 13 items
  10. Gold 7 items
  11. Gray 12 items
  12. ODA Green 1 item
  13. Olive Drab Green 4 items
  14. Orange 2 items
  15. Purple 1 item
  16. Red 17 items
  17. Robin Egg Blue 2 items
  18. Silver 1 item
  19. Titanium Gray 1 item
  20. Tungsten 2 items
  21. White 6 items
Platform
  1. AR-15 2 items
  2. Benelli 10 items
  3. Beretta 3 items
  4. Browning 3 items
  5. Canik 1 item
  6. CZ 6 items
  7. Double Stack Pistol 2 items
  8. Franchi 2 items
  9. Glock 63 items
  10. Heckler & Koch 2 items
  11. Mossberg 2 items
  12. Panzer Arms 2 items
  13. Remington 5 items
  14. Shotgun 26 items
  15. Sig Sauer 9 items
  16. Single Stack Pistol 3 items
  17. Smith & Wesson 6 items
  18. Springfield Armory 5 items
  19. Stoeger 1 item
  20. Taurus 1 item
  21. Tristar 2 items
  22. Walther 3 items
  23. Winchester 2 items
Caliber
  1. 10mm Auto 2 items
  2. 12 Gauge 1 item
  3. 223 Remington 2 items
  4. 300 AAC Blackout 1 item
  5. 380 Auto (ACP) 1 item
  6. 40 S&W 7 items
  7. 45 Auto (ACP) 2 items
  8. 5.56mm NATO 2 items
  9. 9mm Luger 24 items
Capacity
  1. 1-Round 2 items
  2. 2-Round 10 items
  3. 3-Round 5 items
  4. 4-Round 7 items
  5. 5-Round 17 items
  6. 6-Round 6 items
  7. 7-Round 4 items
  8. 8-Round 4 items
  9. 9-Round 1 item
  10. 17-Round 2 items
  11. 18-Round 2 items
  12. 23-Round 2 items
  13. 40-Round 1 item
Material
  1. Aluminum 44 items
  2. Brass 1 item
  3. Carbon Fiber / Aluminum 4 items
  4. Polymer 47 items
  5. Stainless Steel 25 items
Inventory
  1. In Stock 139 items
  2. Out of Stock 27 items
Customer Rating
  1. 5
    33 items
  2. 4
    & up     59 items
  3. 3
    & up     71 items
  4. 2
    & up     76 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!

Page
  4. Kel-Tec P11 Grip Extension
    Kel-Tec P11 Grip Extension
    (37)
    $7.99
  5. Tyrant Designs +1 Magazine Extension for Glock 43 Pistols
    Tyrant Designs +1 Magazine Extension for Glock 43 Pistols
    $29.95 $29.99 $19.99 $21.99 Save $10.00
  11. 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
  15. 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
  18. 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
  19. 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
  25. 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
  26. 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
  27. 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
  29. 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
  30. 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
Page
Filter