|186,000 miles per second.|
It's the law.
Anyone suppress a HK USP Compact 9mm with the aftermarket threaded barrel? If so, did you make any other changes? Just wondering if you should change a spring or anything else, since HK does not sell a threaded barrel for that model.
Just find threaded barrel.
That is where i picked up my threaded barrels for my usp 9,40,45
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