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Ghost M.E.D. – Large Magazine Extension Device for Glock 17, 17L, 18, 22, 31, 34, 35, 37
More Rounds. More Control. Mission-Ready Durability.
When every round counts, trust the Ghost M.E.D. (Magazine Extension Device) – Large to deliver. Designed for Glock Gen 1–4 full-size duty pistols, the Ghost M.E.D. provides a combat-ready +3 magazine capacity boost for 9mm, .40 S&W, and .357 SIG, or a +2 boost for .45 GAP. Engineered for serious operators and EDC users alike, this extension delivers enhanced firepower, faster reloads, and rugged reliability in any environment.
The M.E.D. (LG) isn’t just about capacity—it’s built for extreme duty. A Maritime Drainage Hole allows water and debris to evacuate quickly, while the reinforced locking tab ensures rock-solid performance in harsh conditions.
Each kit includes everything you need: a Ghost-manufactured magazine spring, base plate, collar, and disassembly tool—no need to reuse or modify OEM parts.
🔧 Key Features
- +3 rounds for 9mm, .40 S&W, and .357 SIG
- +2 rounds for .45 GAP (Glock 37)
- Fits Glock models 17, 17L, 18, 22, 31, 34, 35, and 37
- Compatible with Glock Gen 1 – Gen 4 magazines
- Includes full installation kit: spring, collar, baseplate & disassembly tool
- Maritime drainage hole to evacuate water, mud, or debris
- Enhanced locking tab for extreme operational conditions
- Easy drop-in installation—no gunsmithing needed
- Ghost quality assurance backed by a rock-solid reputation
🔫 Compatible Glock Models
| Model | Caliber | Round Increase |
|---|---|---|
| G17 | 9mm | 3 |
| G17L | 9mm | 3 |
| G18 | 9mm | 3 |
| G22 | .40 S&W | 3 |
| G31 | .357 SIG | 3 |
💡 Why Choose the Ghost M.E.D. Large?
- Ideal for duty carry, home defense, or competition
- Add firepower without changing your mag pouches
- Designed for harsh environments and tactical use
- Trusted by LEOs, military, and serious shooters worldwide
- Made by Ghost Inc., leaders in Glock upgrades
The distinction between inferior quality and premium Glock Magazine Extension is undeniable. At MSP, we only offer Glock Accessories from the most trusted brands like GHOST Inc.. Buy with confidence that we stand behind the product we sell.
WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to - www.P65Warnings.ca.gov.
Customer Ratings & Reviews
Ratings Snapshot
out of 5
5
(4)
4
(2)
3
(0)
2
(0)
1
(0)
Would recommend this product.
100%
out of 5
5
(4)
4
(2)
3
(0)
2
(0)
1
(0)
Would recommend this product.
100%
6 Total Reviews
- 1
Glock 37 magazine extension
synthetics-man
Location:
Date:
June 11, 2021
Very well made, can be tuff to install.
Recommended
This glock 17 mag extension is better than expected
heavyb2u
Location:
Date:
June 11, 2021
Assembly is a snap and cycles well. I've only put 50 rounds through it, but so far, so good. The spring that is included places great tension, which eliminates feeding issues I've had with other similar products.
Recommended
I have been waiting for this for a long time!!
swagking13
Location:
Date:
June 11, 2021
I meant ty that in a good way because, as you know, the gap always has had a 10 round mags limit, and there were no other mags to purchase to get those extra rounds up until now. 12+1 is more than enough for the gap or any 45 round being as though the bullet is so large in diameter, so if you ask if I recommend this product, id has to give that a big yes!! The only issue I did run into was the spring that came with it, but I was cool because I just ended up using the factory one, and it worked fine. Ghost products are simply the best, especially for Glocks. I wouldn't go anywhere else for better parts.
Recommended
Glock 22 magazine extension
swagking
Location:
Date:
November 9, 2019
I meant ty that in a good way because, as you know, the gap always has had a 10 round mags limit, and there were no other mags to purchase to get those extra rounds up until now. 12+1 is more than enough for the gap or any 45 round being as though the bullet is so significant in diameter, so if you ask if I recommend this product, id has to give that a big yes!! The only issue I did run into was the spring that came with it, but I was cool because I just ended up using the factory one, and it worked fine. Ghost products are simply the best, especially for Glocks. I wouldn't go anywhere else for better parts.
Recommended
glock 17 magazine extension
Harris
Location:
Date:
November 9, 2019
This is my first attempt at mag extensions. Out of all the options available, I decided to go with the M.E.D. because of the fantastic customer service the company provides.
Recommended
good product
pighetti
Location:
Date:
July 25, 2019
This is my first try at a Glock mag extension. Out of all the options available, I decided to go with the Ghost M.E.D. because of the amazing customer service the company provides. I have been doing business MSP for years and plan to continue that business in the future.
Recommended
6 Total Reviews
- 1
