My Cart ()
Back Close
Filters
Now Shopping by
  1. Color
    Black
Brand
  1. Apex Tactical 1 item
  2. Backup Tactical 1 item
  3. Carlson's Choke Tubes 27 items
  4. CMMG 1 item
  5. Die Free Co 1 item
  6. FAB Defense 1 item
  7. Ghost Inc 12 items
  8. Kel-Tec 2 items
  9. Kimber 1 item
  10. KRISS USA 6 items
  11. Lancer Systems 2 items
  12. Lone Wolf Arms 2 items
  13. Mec-Gar 9 items
  14. Odin Works 4 items
  15. Pachmayr 1 item
  16. Panzer Arms 2 items
  17. Pearce Grip 11 items
  18. ProMag Magazines 2 items
  19. Shadow Systems 1 item
  20. Shield Arms 10 items
  21. Strike Industries 10 items
  22. Sylvan Arms 1 item
  23. TangoDown Inc. 2 items
  24. Timber Creek Outdoors 3 items
  25. Tyrant Designs 10 items
  26. Walther 4 items
  27. Warne Scope Rings 11 items
  28. XTech Tactical 14 items
Color
  1. Aluminum 4 items
  2. Black 152 items
  3. Blue 22 items
  4. Brass 2 items
  5. Burnt Bronze 3 items
  6. Coyote 1 item
  7. Dark Earth 4 items
  8. Flat Dark Earth 15 items
  9. Gold 12 items
  10. Gray 17 items
  11. Nickel 1 item
  12. ODA Green 2 items
  13. Olive Drab Green 6 items
  14. Orange 7 items
  15. Purple 3 items
  16. Red 28 items
  17. Robin Egg Blue 3 items
  18. Silver 1 item
  19. Tungsten 3 items
  20. White 6 items
Platform
  1. AR-15 3 items
  2. Benelli 9 items
  3. Beretta 2 items
  4. Browning 3 items
  5. Canik 1 item
  6. CZ 7 items
  7. FN 2 items
  8. Franchi 2 items
  9. Glock 68 items
  10. Heckler & Koch 2 items
  11. Mossberg 2 items
  12. Panzer Arms 2 items
  13. Remington 5 items
  14. Shotgun 24 items
  15. Sig Sauer 11 items
  16. Single Stack Pistol 3 items
  17. Smith & Wesson 7 items
  18. Springfield Armory 8 items
  19. Stoeger 1 item
  20. Taurus 1 item
  21. Tristar 2 items
  22. Walther 4 items
  23. Winchester 2 items
Caliber
  1. 10mm Auto 2 items
  2. 12 Gauge 1 item
  3. 223 Remington 3 items
  4. 300 AAC Blackout 1 item
  5. 380 Auto (ACP) 1 item
  6. 40 S&W 8 items
  7. 45 Auto (ACP) 2 items
  8. 5.56mm NATO 3 items
  9. 5.7 x 28mm 1 item
  10. 9mm Luger 29 items
Capacity
  1. 1-Round 2 items
  2. 2-Round 9 items
  3. 3-Round 2 items
  4. 4-Round 3 items
  5. 5-Round 15 items
  6. 6-Round 2 items
  7. 10-Round 1 item
  8. 17-Round 2 items
  9. 18-Round 2 items
  10. 23-Round 2 items
  11. 40-Round 1 item
Material
  1. Aluminum 49 items
  2. Polymer 60 items
  3. Stainless Steel 28 items
Inventory
  1. In Stock 121 items
  2. Out of Stock 31 items
Customer Rating
  1. 5
    35 items
  2. 4
    & up     63 items
  3. 3
    & up     72 items
  4. 2
    & up     78 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
  1. KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines - BLK
    KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines
    (61)
    $32.99

    Add to Cart to See Price.

    $25.99 Save $7.00
  2. KRISS MagEx 12+ Extension Kit for Glock 21 Magazine Complete Kit
    KRISS Vector Gen 2 .45 ACP +17 Round Magazine Extension Kit for Glock 21 Pistols
    (11)
    $32.99 $28.99 $29.69 Save $4.00
  3. Mec-Gar +2 Magazine Extension for Glock 17 / 19 Pistols - Black
    Mec-Gar +2 Magazine Extension for Glock 17 / 19 Pistols
    (1)
    $16.99 $9.99 $10.99 Save $7.00
  5. KRISS Vector Gen 2 Glock 20 10mm 33-Round Magazine Extension Kit Full
    KRISS Vector Gen 2 10mm +18 Round Magazine Extension Kit for Glock 20 / 40 Pistols
    (3)
    $32.99

    Add to Cart to See Price.

    $25.99 Save $7.00
  7. Strike Industries +4/+5 Magazine Extension for Glock 17 / 22 Pistols
    Strike Industries Aluminum +4 / +5 Magazine Extension for Glock 17 / 22 Pistols
    (2)
    $38.99 $43.99 $35.99 $39.99 Save $4.00
  8. Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols - BLK
    Shield Arms +5/+4 Magazine Extension for Glock 17 / 22 Pistols
    (3)
    $39.99 $35.99 $36.99 Save $4.00
  9. Tyrant Designs Magazine Extension for Glock 19 / 23 Pistols - BLK
    Tyrant Designs Magazine +5 / 4 Extension for Glock 19 / 23 Pistols
    (22)
    $39.99 $33.99 $35.99 Save $6.00
  10. 3 Pack - KRISS Vector Gen 2 .45 ACP +17 Round Magazine Extension Kit (BLK) for Glock Magazines
    3 Pack - KRISS Vector Gen 2 .45 ACP +17 Round Magazine Extension Kit for Glock Magazines
    (26)
    $85.99

    Add to Cart to See Price.

    $67.99 Save $18.00
  11. Lancer L5AWM +6 Extended Magazine Basepad Right
    Lancer L5AWM Plus 6-round Extended Magazine Basepad
    (59)
    $24.99 $27.99 $22.99 $25.99 Save $2.00
  13. Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols - Black
    Tyrant Designs +4/5 Magazine Extension for Glock 17, 22, 34, 35, 19X, 45 Pistols
    (13)
    $39.99 $35.99 Save $4.00
  16. KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines 3-Pack - BLK
    KRISS Vector Gen 2 9mm +23 Round Magazine Extension Kit for Glock 17 Magazines 3-Pack
    (9)
    $85.99

    Add to Cart to See Price.

    $67.99 Save $18.00
  19. Die Free Co Dos Boot +2 Magazine Extension for Magpul Gen3 AR-15 PMAGs 3-Pack - BLK
    Die Free Co Dos Boot +2 Magazine Extension for Magpul Gen3 AR-15 PMAGs 3-Pack
    (3)
    $20.99
  20. Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols - BLK
    Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols
    $39.99 $35.99 Save $4.00
  21. Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols - BLK
    Tyrant Designs 9mm +4 Magazine Extension for Glock 43X / 48 Pistols
    (18)
    $39.99 $35.99 Save $4.00
  25. Shield Arms Magazine Extension +5 for S15 Magazines for Glock 43X / 48 Pistols
    Shield Arms S15 +5 Magazine Extension
    (3)
    $39.99 $34.99 $35.99 Save $5.00
  28. 3 Pack - KRISS Vector Gen 2 10mm +18 Round Magazine Extension Kit (BLK) for Glock Magazines
    KRISS Vector Gen 2 10mm +18 Round Magazine Extension Kit for Glock Magazines 3-Pack
    (13)
    $85.99 $87.99

    Add to Cart to See Price.

    $67.99 Save $20.00
  36. Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols - BLK
    Strike Industries +5 Aluminum Magazine Extension for Glock 19 Pistols
    (5)
    $38.99 $39.99 $35.99 $37.99 Save $4.00
  38. Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate - BLK
    Mec-Gar +2 Aluminum Extended Base Pad for Mags w/ Polymer Floorplate
    $33.99 $36.99 $21.99 Save $15.00
Page
Filter