TommyBuilt USA is an 07/SOT FFL specializing in Customization, Creation and Modification.

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Michael's Machines 10mm UMP Conversion

10mm Barrel, Bolt Carrier w/German Firing Pin Assembly.
$1,299.99
Availability: Out of stock

Product Description
Michael's Machines 10mm Barrel, complete Bolt Carrier with German firing pin assembly and 1 new .40 German mag converted to 10mm and marked as 10mm. Mags are specific to this set up and we do have extra mags available.
Additional Information
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