(6 customer reviews)



Rapid deployment, thin, agile, and precise. This is the MCX Rattler. Featuring a 5.5″ PDW barrel, the MCX platform has never been more compact or accessible. Ready to go where-ever it’s needed, the MCX Rattler has a thin, foldable stock for easy concealment and stowage. This gun was designed from the ground up to be as discrete as possible while retaining all the capabilities of the MCX. Free-floating M-LOK handguards matched with a PDW upper and a PDW Ultra Thin Folding Aluminum Stock, the MCX Rattler SBR is the ideal choice for fast-moving operators.

M-LOK is a registered trademark of Magpul Industries Corp


Mag Type AR-15
Barrel Length 5.5 in (140 mm)
Caliber 300 Blk
Height 8.0 in [203 mm]
Overall Length 23.5 in [597 mm]
Overall Width 2.8 in [71 mm]
Twist Rate 1:5
Weight 5.7 lbs (2.59 kg)
Operating System Gas Piston

sig mcx rattler

Like bourbon and barbecue, or bacon and more bacon, custom guns and classic cars just go good together. The first time you turn over a freshly rebuilt engine—the straight headers pounding your chest, pissing off neighbors and rattling garage doors—feels similar to pulling the trigger for the first time on a custom rifle built piece by piece under the buzzing fluorescent lights of your friend’s shop.Some people get it; some people don’t.

 (Michael has a background in graphic design and supplied David with custom vinyl stencils before becoming a full-time coater himself.) I think the results speak for themselves.

Their inspiration started, as with many things these days, with an internet search. “We both knew we wanted to do a cool muscle car color,” David said.

. For highlights, they chose Satin Aluminum for the small parts and for the logos, and Hidden White for the rails.

That New Gun Smell

In contrast, David and the crew at MAD Custom Coating went for a shiny new look. The smooth bright blue holds all the depth and perfection of a freshly restored classic. Watch your buddies closely on range day—a “door ding” would be tragic on this beauty.

To enter for a chance to win these stunning Sig Sauer MCX Rattler PSB (Pistol Stabilizing Brace) pistols, make sure you visit

And to see more great custom work and get started on your own hot-rod-style rifle or pistol, check out

6 reviews for Sig Sauer SIG MCX RATTLER SBR

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