When I decided to get a .308 semi-auto rifle the choices were fairly limited – FAL-style, M1A-style, HK-style. Oh sure, there were a few offbeat models out there (.308 AK, Valmet, etc) but I wanted something with a good track record and, more importantly, excellent logistics support in terms of parts, accessories and magazines. My first choice would have been the FAL style rifles but I went with the Hk clone from JLD/PTR on the strength of a) the reputation of the HK system and b) the dirt cheap parts and magazines that flooded into the US as the G36 pushed the G3 into the history books.
The HK91 is a fine rifle, no doubt. Not my favorite, I find its ergonomics pretty lacking, but I have unwavering faith in it’s reliability and performance. What I was interested to discover was that Hk, at some point, made a 50-rd drum for the G3/HK91. Didja know that? I didnt. Very few, apparently, made it into this country and when found the bring a little under $2k. For a 50-rd mag… After the AW ban… I mean, yeah, its got the magic ‘HK’ stamped on it but still…..
I remember watching video of the North Hollywood Shootout and one of the bad guys was reported as having a drum for his HK. I recall thinking that must have been a typical error made by a gun-ignorant reporter – he must have meant a drum for his AK. But…on video I recalled seeing the HK91 with what appeared to be a drum. I thought maybe they had made the drum themselves or modified some other drum magazine…after all, there was no such thing as a HK drum, right? Wrong. I guess if you rob enough banks and armored cars you can afford to move up from the cheap guns and cheap accessories.
So, if youve got around $1800-$2000 laying around you can get yourself a 50-rd drum for your HK91. Be the first kid on your block to be the last kid on your block. If you have the money, right?
But this is America, dammit. Where there’s a will, a market, and some CAD software theres a way. Behold:

This is so mega-awesome it hurts. I’m sure somewhere, at some point, someone popped that 50-rd drum into their HK and half a continent away Chuck Schumer felt the beginnings of what he thought was a stroke.
MSRP? About $400.
Is there one in my future? Nope. But you’d think I’d be the first guy to jump on the bandwagon for one of these crowd-reducers, right? Simple math, amigo. I put two boxes in front of you. One box contains that lovely drum. Looks cool, is cool, will make you the envy of SWAT teams across the land. And will let you shoot 50 rounds. Sounds good, yes? Now lets crack open Box #2. Inside box #2 are 400 20-round magazines. Or, put another way, 8000 rounds worth of triggertime. it boils down to this: would you rather have one mag that holds 50-rounds or 400 mags that hold 20? Im preparing for the long haul, and that means not putting my eggs in one basket. That drum would be fun, no two ways about it, but it ain’t $400 worth of fun.
Now, before anyone (especially the guys that make and sell that drum) starts flaming the comments, lemme say that I think the fact someone went through the trouble of making a product like this available to the public is commendable. Youre doing Crom’s work, well done. I hope you sell a metric buttload of these things. However….I’m a poor survivalist with limited resources…while your product is darn nice, I gotta stick with what I can afford and one magazine vs. 400 magazines, no matter how you cut it, is what the final argument comes down to. For the price of that drum I can have enough mags for several PTR-91 rifles with plenty left over for practice mags, trading stock mags, cached mags, spare mags and even investment mags.
While we’re on the subject, I know the BetaMag folks have been working on a 100-rd mag for the M1A. If they could make the feed tower interchangeable so I could put an HK adapter on it and keep it priced fairly reasonably I might be interested in one. But only after Ive run out of other gun stuff to spend money on.
The question that most of use have no interest in asking about this is “what is it good for?” If I asked myself that question when I bought new gun toys I’d have a lot more space in my gun safe right now. Someone will say that its an excellent choice for a ‘semi-auto SAW’ but, really, unless you have a quick-change barrel on your rifle I dont think dumping a hundred rounds of .308 in a hurry is gonna be a healthy thing for your firearm. I suppose if you have to make some sort of ‘Omega Man’-esque flight from a large population center it could come in handy but it still seems like a solution looking for a problem. Why did HK make it? It was for a project they had using a modifed G3 as a machine gun (HK11E, apparently). The variant did have a barrel change feature, so in that regard it made sense.
HK also made an 80 round “double”-drum för the HK11/HK21:
http://world.guns.ru/machine/mg18-e.htm
This subject came up in a forum I belong too. Yes, the mags are a better value, I agree. But if I already HAVE the mags… hehehehehehe. I can see this used at BOL in a fixed position or perhaps in a technical but NOT for moving x-country.
And I have an eye open for the M1A beta mag… really want one for the FAL.
I first saw one of these 50rd. mags in the bad ole’ days (1984 AKA the cold war). A West German border guard in Berlin had one in his G3. Asked him if he had any extra to sell “Your the 3rd American to ask me that question”.
A friend who has an HK 91 that he modified to be mounted on an MG3/ MG-42 tripod has a couple of these X-91 drums (and a real HK 50 rd.). The drums work just as well as the real HK one. When mounted on the tripod and using the periscope sight, we were getting hits on an old manhole cover at 900 m. Very effective.
I do like that HK mags are ridiculously cheap. Still going M1A though, the ergonomics of a 2X4 as a club are to me equal to an HK or an FN-FAL. I can see why people go those ways but I will not. Not cheap but it isn’t a practical move anyway.
As for drums. I don’t see the reason. Unless you have a weapon that is both automatic and belt fed it can fill its purpose with normal 20-30rd mags. Practice changing mags.
I had similar thoughts after I got my AR and came across the Betamags. For the price I could get a dozen or so good normal mags. I could get more now as AR mags have dropped in price but now I have no money available for even more mags.
Steelheart
What are they good for? When you hit the beach at Omaha (France, not Nebraska) you go in with one of these puppies. You drop it when it’s emptied and go to the 20 rounders on your belt.
Still…..
We’ve got a couple guys out here with full-auto HK packs…and a fifty round mag dump through a short barreled HK might be worth seeing. At night. On Youtube.
Hmmm…….
I dont think there are too many people whose survival plans include storning Omaha beach.
“I dont think there are too many people whose survival plans include storning Omaha beach.”
Plan for the worst, hope for the best. *cackle*
I would love to have a PTR 91 (or preferrably a G3 or AK4) with a couple of those mags for plinking.
BePrepared – exactly! Survival plans *have* to take into account the unexpected – such as having to storm Omaha or even The Spanish Inquisition! Because nobody expects….
Another reason to go with 3 20′s rather than one 50 is that the fifty has only one set of feed lips, one follower and one spring. If any of those things go down, you’re temporarily out of 50 rounds (or whatever’s left in the drum). With the 20′s, you’re only down 20 (max) and you’re still in action. On such slight advantages are lives won and lost.
Lawhobbit: survival plans need to have priorities. Let’s not emulate the White Knight’s mousetrap.
Awesome article, the drum for me was a passion of the “gotta have it,” but after using it, it does serve a real purpose. Light infantry who need cover fire, or sustained fire from a fixed position will appreciate it as well as anyone who has delt with using belts, drums are much easier to manage. Plus at the range its a real crowd pleaser – JM
I certainly cant disagree with the crowd pleaser part. For someone who, as you said, needs sustained or cover fire it would definitely be a must-have…for poor slobs like me, though, its an expensive fantasy. It really is a ‘niche product’ I suppose, but if I could afford one Id be all over it like Bill Clinton on an intern. Major kudos to someone for bringing it to market. If you’d like to loan me one for a while for an evaluation or test I sure wouldnt say no.
from a guy with a Full Auto 91, this drum is a must have for me. i was thinking hard about it when i only had a semi but now i have to have one of these. FA guns are not really for the survivalist though. they are toys for those who have to have them.
from a guy who has belt guns all the way down to pump 22s, this drum is a happy medium. nothing like throwing a 250 round belt into you crew served weapon, when you are by yourself.