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Title pretty much says it all. I'm guessing the best method would be to get a regular USP and get an aftermarket barrel for it? What about the o-ring thing? I have a gemtech 45 blackside in 0.578-28 and I found out after I bought it that it doesn't function well with my glock 21, so I was thinking about getting a USP tactical, until I learned about the different thread pitches. Anyone have any ideas? Are there any reliable thread adapters in existence? I can't imagine any being solid enough to not throw off the bore-concentric level of the suppressor, but maybe there is, I'm not really sure. Anyway, any help is greatly appreciated.

Oh, and another thing, if I get a USP 45 full size, I'm pretty much resigned to those stupid 10 round mags since H&K doesn't like putting too many of the 12 rounders out on the civilian market? There's no way to convert the 10 rounders to 12 easily, I assume?
 

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Title pretty much says it all. I'm guessing the best method would be to get a regular USP and get an aftermarket barrel for it? What about the o-ring thing? I have a gemtech 45 blackside in 0.578-28 and I found out after I bought it that it doesn't function well with my glock 21, so I was thinking about getting a USP tactical, until I learned about the different thread pitches. Anyone have any ideas? Are there any reliable thread adapters in existence? I can't imagine any being solid enough to not throw off the bore-concentric level of the suppressor, but maybe there is, I'm not really sure. Anyway, any help is greatly appreciated.

Oh, and another thing, if I get a USP 45 full size, I'm pretty much resigned to those stupid 10 round mags since H&K doesn't like putting too many of the 12 rounders out on the civilian market? There's no way to convert the 10 rounders to 12 easily, I assume?
There are tons of 12 round mags around, you can find them just about anywhere. As far as your suppressor of choice, might want to do a search on here, there is a relatively high failure to cycle rate in the USP with them since they dont have a booster. Lots of people have no problems, lots of people have problems, some people initially have problems then after a few hundred rounds are ok. Just do yourself a favor and do a search and read about it before you go putting all the money into it.
 

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Discussion Starter #3
There are tons of 12 round mags around, you can find them just about anywhere. As far as your suppressor of choice, might want to do a search on here, there is a relatively high failure to cycle rate in the USP with them since they dont have a booster. Lots of people have no problems, lots of people have problems, some people initially have problems then after a few hundred rounds are ok. Just do yourself a favor and do a search and read about it before you go putting all the money into it.
Will do. I'm not rich, so I have plenty of time to research before I'd have the money to do anything. My friend has a USP in 45, and though I don't see him often, maybe I could buy a barrel threaded correctly for it to see how it functions.

Aren't the 12 rounders supposed to be like 55-60 bucks though?

Thanks for the good advice. :680:
 

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Merchant of Death (Admin)
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The 12 rounders are quite plentiful, albeit pricey. TROS USA makes thread adapters, but I'm not sure about your situation. The USP Tactical barrel in .45 is a metric left hand pitch and the thread you want is a standard right hand pitch. Seems you would be forever loosening one while tightening another. Might be best to have Jarvis cut you one exactly to your needs.
 

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The 12 round mags are around $10.00 more than 10 rounders. You can find some great deals on the 10 round mags, but be prepared for the high price of any HK mags.
 
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