Ode to the Extendo
“Glocks with extendos, Chucking up the hood then throw like 80 out that window,” Wise words from Warrior Poet the Game. What’s an extendo? It’s a colloquial term used by the young people to describe an extended magazine. What exactly counts as an extended magazine? I define an extendo as any magazine that holds more rounds than the original designer intended for the gun to hold, or a magazine that exists outside the norm in terms of capacity. This can change as time passes. The AR-15, for example, was designed with a 20 round magazine, but 30-rounders are now the norm.
An extendo can be a 40 round PMAG for the AR 15 or a 75 round drum for an AK series rifle. They come in all shapes, and for most guns. Even the 1911 has its share of ridiculous 15 round stick mags out there. They are most prevalent in popular guns like the Glock, AK, and AR series, but if you are willing to look hard enough you can find them for most guns.
What’s the Point of Extendos?
Admittedly I have a bias when it comes to ammo. I served 5 years as a machine gunner, so I believe that more ammo is always better. The fellas in my squad with rifles each carried seven 30 round magazines. I carried 500 rounds for my M240 with another 500 spread out throughout the squad. I like my ammo, people.
Most of us aren’t bangin’ around the Helmand province. The extended magazines remain popular, nonetheless. They actually serve a wide variety of purposes. A quality extended magazine is just as reliable as a stock configuration magazine, it just holds more ammo. So why should you love extendos as much as me?
Shotguns, rifles, and pistols all have options for extended magazines. In a home defense scenario, you are unlikely to be wearing a plate carrier or war belt. Reloading will be a pipe dream, so you have to fight with what’s in (or on) your gun. Having as many rounds as possible in reputable magazines is a noble goal.
For the AR you have the always affordable 40 round PMAGs, or you can go big with the D-60 drum that can be stored loaded. (Side Note: the D-60 doesn’t work with 300 Blackout, so put that new 300 Blackout Upper Away.) Both are reliable and proven systems that are relatively affordable. The magazines more so than the drum. Two 40 round magazines a Magpul mag coupler gives you lots of lead at a low price.
If you are rocking a Glock you’ll have plenty of reliable, extended options from Glock, Magpul, and ETS. KCI even makes a 50 round drum, but I’m not sure if I’d trust it for home defense.
Shotguns are limited due to limited mag fed options, but we can’t ignore the fact Mossberg allows you to pack 10, 15, or even 20 rounds of 12 gauge in their famed 590 series of shotguns. Whoever said shotguns have low capacity didn’t see this coming.
Modern shooting competitions are often won by fractions of a second, and fractions of a second is what it takes to reload a gun. This makes extended magazines a much-desired item. Gun in more ‘open’ class competitions will often be ridiculous in length and capacity.
Other companies produce magazines with odd capacities like 27 rounds to fit within the rules of certain competitions. ETS and Magpul both produce magazines with odd capacities to fit within certain length limitations.
The PCC Market
One market that extendos own is the PCC market. Rifles using Glock magazines are quite common from ARs to the unique SUB 2K. The PCC market is huge and it makes little sense to use a 17 round magazine in a rifle when 33 round stick mags or 50 round drums exist.
In this situation, an extendo pistol mag is basically a standard capacity rifle magazine.
Cause They Are Fun
This is America right! (Applies in most States, but not all.) Why not have more rounds. AR and AK drums designed for fun are cheap and easy to find online, as are magazines of varying capacities. It’s also wise to observe who is making the magazine and their reputation. Some can induce failures and that can be frustrating.
Extendos, in general, are more than useful in practical rules, but I have a feeling most of us love them because:
- They Are Fun
- They Thumb their Nose at Anti Gunners
- Their heavy prescence in rap lyrics
Travis Pike is a former Marine Machine Gunner, a lifelong firearms enthusiast, and now a regular guy who likes to shoot, write, and find ways to combine the two. He holds an NRA certification as a Basic Pistol Instructor and is the world’s Okayest firearm’s instructor.