My Cart ()
Back Close
Filters
Now Shopping by
  1. Material
    Aluminum
  2. Inventory
    Out of Stock
Brand
  1. Odin Works 1 item
  2. Shield Arms 2 items
  3. Sylvan Arms 1 item
  4. Timber Creek Outdoors 1 item
  5. Tyrant Designs 1 item
  6. Walther 1 item
  7. Warne Scope Rings 3 items
Color
  1. Aluminum 1 item
  2. Black 10 items
  3. Blue 4 items
  4. Burnt Bronze 1 item
  5. Flat Dark Earth 1 item
  6. Gold 1 item
  7. Gray 1 item
  8. Olive Drab Green 1 item
  9. Orange 2 items
  10. Purple 1 item
  11. Red 3 items
  12. Robin Egg Blue 1 item
  13. Tungsten 1 item
Platform
  1. AR-15 1 item
  2. CZ 2 items
  3. Glock 3 items
  4. Sig Sauer 1 item
  5. Smith & Wesson 1 item
  6. Springfield Armory 1 item
  7. Walther 1 item
Caliber
  1. 223 Remington 1 item
  2. 5.56mm NATO 1 item
  3. 9mm Luger 2 items
Capacity
  1. 2-Round 1 item
  2. 5-Round 1 item
Material
  1. Aluminum 10 items
  2. Polymer 9 items
  3. Stainless Steel 10 items
Inventory
  1. In Stock 40 items
  2. Out of Stock 10 items
Customer Rating
  1. 4
    & up     1 item
  2. 2
    & up     2 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 +5 Magazine Extension for Springfield Echelon Pistols
    Tyrant Designs 9mm +5 Magazine Extension for Springfield Echelon Pistols
    Out of stock
    (4)
    $39.99 $32.99 $35.99 Save $7.00
  2. Warne 9mm / 40 +3 / 2 Magazine Extension for S&W M&P
    Warne 9mm / 40 +3 / 2 Magazine Extension for S&W M&P
    Out of stock
    $39.99 $34.99 Save $5.00
  3. Shield Arms Gen 2 / 3 S15 +2 Magazine Extension
    Shield Arms Gen 2 / 3 S15 +2 Magazine Extension
    Out of stock
    $34.99 $32.99 Save $2.00
  4. Shield Arms +5 Magazine Extension for Magpul Gen 3 AR-15 PMAGs
    Shield Arms +5 Magazine Extension for Magpul Gen 3 AR-15 PMAGs
    Out of stock
    $43.99
  5. Warne 9mm +4 Magazine Extension for CZ 75
    Warne 9mm +4 Magazine Extension for CZ 75
    Out of stock
    (1)
    $39.99 $29.99 Save $10.00
  6. Timber Creek Outdoors Sig Sauer P365 Magazine Extension Plate
    Timber Creek Outdoors Sig Sauer P365 Magazine Extension Plate
    Out of stock
    $49.99 $29.99 Save $20.00
  7. Odin Works Magpul GL9 Glock 17 / 19 / 26 Magazine Base Pad
    Odin Works Magpul GL9 Glock 17 / 19 / 26 Magazine Base Pad
    Out of stock
    $35.99 $33.99 Save $2.00
  8. Warne 9mm +3 Magazine Extension for CZ 75
    Warne 9mm +3 Magazine Extension for CZ 75
    Out of stock
    $39.99 $29.99 Save $10.00
  10. Walther +2 Aluminum 9mm Magazine Extension for PPQ Pistols
    Walther +2 Aluminum 9mm Magazine Extension for PPQ Pistols
    Out of stock
    $60.99 $44.99 $46.99 Save $16.00
Filter