by Mark Mauzy | Oct 21, 2020 | Barrel Threading, Firearms, Pistol
Threading Your HK UMP Barrel – A Cheaper Alternative to Adapters Threading Your HK UMP Barrel – A Cheaper Alternative to Adapters Have you noticed that little lug on the front of an HK UMP barrel? If so, you’ve probably also seen the high price tag on adapters just to...
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