Judge: SIG SAUER’s MPX “Muzzle Brake” Is Actually a Silencer

By Nick Leghorn

Is the extensive muzzle brake permanently attached to the end of one version of the MPX’s barrel is a muzzle brake or a “silencer”? The battle between SIG SAUER and the ATF has been raging for months. SIG SAUER’s position: it’s a muzzle brake. The part doesn’t reduce the noise of the gun in the slightest. But there’s a twist: SIG planned to make sell a specially designed shroud that would transform the muzzle brake into a properly registered silencer. The ATF was not pleased. They dropped the ban hammer on the part. SIG SAUER sued. And now a judge has made his decision . . .

From the court decision:

In the present case, the ATF acted rationally in concluding that Sig Sauer intended the baffle core to be used only as a silencer part because the agency pointed to substantial evidence in the record to support its determination.

First, it is undisputed that the baffle core is an essential silencer component. Tr. at 55-56 (Doc. No. 31). It is, in fact, identical in design and dimension to the baffle core contained inside a removable Sig Sauer silencer. A.R. 824; see also Tr. at 55-56 (Sig Sauer’s counsel conceding …read more

Source:: Truth About Guns