SIG Sauer has been in the news ... Speaking of the venerable service cartridge, the Rattler earned its name when prototype testing was conducted and a 5.56 model was fired inside a vehicle ...

LAS VEGAS -- Sig Sauer is now offering a powerful 5.56mm version of its popular, ultra-compact Rattler personal defense weapon. Sig's original Rattler was introduced last year in .300 Blackout.

The SPEAR LT stock, which is similar to the “Minimalist Plus” design offered on the MCX Rattler ... rifles in 5.56 NATO, 7.62x39 mm and .300 Blackout. Photo courtesy of SIG Sauer.

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.

Sig Sauer’s MCX Rattler, minus the collapsible stockPhoto via Sig Sauer Sig Sauer’s new carbine goes even further, with a short 5.5-inch barrel and a specialized PDW upper giving the carbine ...

U.S. Special Operations Command intends to transform some of its standard-issue M4 carbines into Sig Sauer MCX Rattler personal ... cartridges and standard 5.56 mm rounds. SOCOM had announced ...

U.S. Special Operations Command intends to transform some of its standard-issue M4 carbines into Sig Sauer MCX Rattler personal ... cartridges and standard 5.56 mm rounds.