My Cart ()
Back Close
Filters
Now Shopping by
  1. Color
    Red
  2. Inventory
    In Stock
Brand
  1. Backup Tactical 1 item
  2. Lancer Systems 1 item
  3. Mec-Gar 1 item
  4. Shield Arms 2 items
  5. Strike Industries 1 item
  6. Timber Creek Outdoors 2 items
  7. Tyrant Designs 6 items
  8. Warne Scope Rings 3 items
Color
  1. Aluminum 3 items
  2. Black 123 items
  3. Blue 13 items
  4. Brass 2 items
  5. Burnt Bronze 2 items
  6. Coyote 1 item
  7. Dark Earth 3 items
  8. Flat Dark Earth 11 items
  9. Gold 8 items
  10. Gray 13 items
  11. ODA Green 1 item
  12. Olive Drab Green 3 items
  13. Orange 2 items
  14. Purple 2 items
  15. Red 17 items
  16. Robin Egg Blue 2 items
  17. Silver 1 item
  18. Tungsten 2 items
  19. White 6 items
Platform
  1. Glock 13 items
  2. Sig Sauer 1 item
  3. Smith & Wesson 1 item
Caliber
  1. 223 Remington 1 item
  2. 300 AAC Blackout 1 item
  3. 40 S&W 2 items
  4. 5.56mm NATO 1 item
  5. 9mm Luger 3 items
Capacity
  1. 1-Round 1 item
  2. 2-Round 2 items
  3. 3-Round 1 item
  4. 4-Round 1 item
  5. 5-Round 4 items
  6. 6-Round 1 item
Material
  1. Aluminum 16 items
Inventory
  1. In Stock 17 items
Customer Rating
  1. 5
    7 items
  2. 4
    & up     13 items
  3. 3
    & up     14 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. Strike Industries Aluminum +4 / +5 Magazine Extension for Glock 17 / 22 Pistols - Red
    Strike Industries Aluminum +4 / +5 Magazine Extension for Glock 17 / 22 Pistols
    (4)
    $38.99 $43.99 $35.99 $39.99 Save $4.00
  2. Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols-Red
    Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols
    (23)
    $39.99 $29.99 Save $10.00
  3. Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols - Red
    Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols
    $39.99 $35.99 Save $4.00
  4. Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols - Red
    Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols
    (18)
    $39.99 $29.99 Save $10.00
  5. Lancer L5AWM Plus 6-round Extended Magazine Basepad (RED)
    Lancer L5AWM Plus 6-round Extended Magazine Basepad
    (60)
    $24.99 $27.99 $23.99 $25.49 Save $2.50
  6. Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 17 / 22 - Red
    Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 17 / 22
    (3)
    $49.99 $39.99 Save $10.00
  7. Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 19 / 23 - Red
    Warne Scope Mounts +5 / +4 Extended Base Pad for Glock 19 / 23
    (1)
    $49.99 $29.99 $39.99 Save $20.00
  8. Shield Arms S15 +5 Magazine Extension - Red
    Shield Arms S15 +5 Magazine Extension
    (3)
    $39.99 $34.99 $35.99 Save $5.00
  9. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate - Red
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Metal Floorplate
    (2)
    $33.99 $36.99 $21.49 $23.99 Save $13.00
  10. Tyrant Designs S&W M&P Shield Plus 2 Aluminum Magazine Extension Red Left View
    Tyrant Designs S&W M&P Shield +2 Aluminum Magazine Extension
    (19)
    $29.99 $19.99 $26.99 Save $10.00
  11. Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate - RED
    Timber Creek Outdoors Sig Sauer P320 Magazine Extension Plate
    (1)
    $49.99 $25.99 $31.99 Save $24.00
  12. Tyrant Designs Glock 43 +1 Magazine Extension (RED) Right
    Tyrant Designs +1 Magazine Extension for Glock 43 Pistols
    $29.95 $29.99 $19.99 $21.99 Save $10.00
  13. Timber Creek Outdoors Magazine Extension for Gen 4 / Gen 5 17, 19, and 34 Pistols - Red
    Timber Creek Outdoors Magazine Extension for Gen 4 / Gen 5 Glock 17, 19, and 34 Magazines
    (2)
    $49.99 $26.99 $29.99 Save $23.00
  14. Warne Scope Mounts +3 / +2 Extended Base Pad for Glock 17 / 22 - Red
    Warne Scope Mounts +3 / +2 Extended Base Pad for Glock 17 / 22
    (1)
    $39.99 $29.99 Save $10.00
  15. Tyrant Designs +2 Magazine Extension for Glock 43 Pistols - RED
    Tyrant Designs +2 Magazine Extension for Glock 43 Pistols
    $32.99 $20.99 $28.99 Save $12.00
  16. Tyrant Designs Glock 43 +3 Magazine Extension (RED) Right
    Tyrant Designs +3 Magazine Extension for Glock 43 Pistol Magazines
    (16)
    $34.99 $22.99 $31.99 Save $12.00
  17. Backup Tactical +5 Magazine Extension for Glock 19 / 23 Pistols - Red
    Backup Tactical +5 Magazine Extension for Glock 19 / 23 Pistols
    (1)
    $59.99 $54.99 Save $5.00
Filter