This is an example of a custom threaded barrel for a customer. The UMP .45 acp barrel is threaded in 16 x 1 Left handed. $89.99 plus return shipping of $15.99 on that type of barrel. The other 2 barrels are M-11 & Mac-10 9mm, with threaded barrel ends to 1/2x28. Prices may vary depending on additional work. Please call before shipping barrels to us to configure your specific needs. Thanks
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