Meet the Copperhead, Sig’s attempt at an NFA-compliant SMG
An ultra-compact version of the MPX, Sig Sauer’s Copperhead variant is legally a pistol and is new for 2019.
Featuring a 3.5-inch barrel with an integrated muzzle brake, the 4.5-pound Copperhead comes from the factory with a two-position pivoting brace that Sig advertises as contouring and adapting to the movement of the shooter’s arm. Finished in FDE Cerakote E190, the pistol runs 14.5-inches overall with a top-mounted M1913 rail.
As Sig submitted a variant of their MPX series to the Army for the military’s request to field a new Sub Compact Weapon for use with personal security detachments last year, it is likely a safe bet that the Copperhead stemmed from the same train of thought, but as it is semi-auto and uses a brace, is primed for the commercial market.
More in my column at Guns.com.