USC Magazines

[One Round Down]

I did a search and didn't turn up much of anything except about USC/UMP conversions.

My question is this...Does anybody make a 20 round or larger capacity magazine for the USC without having to convert to the UMP or Grease Gun mag lowers?

Sorry if this has been asked, but I couldn't find any threads on this subject. I am just having a tough time justifying blowing $3000 on a full blown UMP conversion and six or eight mags to go with it for the end result if I can get higher capacity mags and keep my stock USC. Don't get me wrong...I love the folding stock UMP conversuions, but I just don't see it being worth the investment of cash required to get it to that point.

[straightgrain]

Probably not. The reason why the conversions have more capacity is that they are using the already made UMP or grease gun mags for higher capacity. These are built on a double stack mag design. The USC is built on a single stack design. Doubling your round count in single stack is going to make that magazine very long and mighty silly looking.

I suppose somebody could design an aftermarket that had a transition from double stack to the single stack mag well. But we are talking about some serious money/resources to design something that there is not a huge market for (hell, even HK cannot decide if they want to keep the thing in production/import).

[dan_wilson_ou]

This sight has some interesting USC things. I have not ordered from them, so I can't vouch on quality or anything. They do advertise a 20 round usc mag.

http://www.lanworldinc.com/HK.html

Hope this helps.

[One Round Down]

This sight has some interesting USC things. I have not ordered from them, so I can't vouch on quality or anything. They do advertise a 20 round usc mag.

http://www.lanworldinc.com/HK.html

Hope this helps.

Nice website and definitely some interesting products. I'm not sure that $130/mag solves my cost-containment problem. By the time I get several of those mags, I'd be up to the cost of a UMP conversion in no time. Beggars can't be choosers I suppose.

I'll drop them a line and see what I can find out about availability. Their site is filled with "slow moving" customs issues, delays, etc., so it may be a dead-end (or at least a dying end).

Thanks for the responses, Gents. Much appreciated.

[Las_Vegas_HK]

HDPS has a 50 round Pro Mag drum that they are(where?) selling that looks promissing for single stack USC owners.

http://www.hdps.org/htm/DRUM-45--50.jpg

[straightgrain]

Well I'll be! That 20 rounder has to be LONG!

[dan_wilson_ou]

It's also not very functional. Two 10 rounders magsenched (sp) are the best funtional option IMHO. But for those looking for an option I guess the 20 would work....... Someday...(sigh)......I will have the full up SBR ump mod.......someday.........

[One Round Down]

Well, I tried calling LanWorld...no good. I sent them an e-mail asking about the availability of their USC mags and the stock/grip conversion. I am really just interested in the mags, but I figured others here might want to know about the other USC parts/accessories so I figured I'd kill two birds with one stone. I'll let you know what I hear back.

That is definitely a loooooong mag. No questions about it. I am not sure that a 20-round single stack mag is going to be all that shorter than a 30-round M3 mag. That said...I don't know that either are all that functional because they are so long. The more thought I give to this whole project, the more tempted I am just to leave the USC alone in its stock configuration and buy a @#$% AR in 9mm so that I can have a pistol carbine with 20+, 30+ and 100 round mags/drums that are readily available!! I know, I know...blasphemous!!! :D

This is just a giant problem created by HK to start with and their failure to support the US consumer market by not offering the features we are all clammoring for!! ;) Ok...off my soapbox now. Like I said...I'll let you know what I find out.

[Gunschlinger]

I wonder what shooting prone is like with the long 20 rnd mag. I really like the USC. It shoots so nice! HDPS is definately the way to go if there is a conversion in order. I have three stock black USC's right now. Ideally I'd like to leave one stock, make a title 1 conversion, and a SBR one. And if I win lotto a 9mm one would be pretty sweet too!

[Tactical Shooter]

It's also not very functional. Two 10 rounders magsenched (sp) are the best funtional option IMHO. But for those looking for an option I guess the 20 would work....... Someday...(sigh)......I will have the full up SBR ump mod.......someday.........

I agree on the Mag Cinch option - I use it on my USC non-conversion. It's pretty quick to change mags on that rifle with very little practice. Still, much more fun to shoot my conversion with 25 rounds at the ready.