300 Blackout and 5.56 NATO (.223 Rem.) making their way to the commercial market. Get a quick look at the MCX Rattler on the SIG range in this video, and for more, visit sigsauer.com.

backpack or on the body. The Sig Sauer MCX Rattler was specially designed for the special operations community. It is a compact rifle that shoots .300 Blackout and measures just 16 inches when its ...

It seems that Sig Sauer is only immediately offering the Rattler in .300 Blackout, but some buyers might hold out for the 5.56x45mm that Tactical Life hints is on the way at a later date.

U.S. Special Operations Command intends to transform some of its standard-issue M4 carbines into Sig Sauer MCX Rattler personal ... can chamber both .300 Blackout cartridges and standard 5.56 ...