SIG MCX Rifle in 5.56 mm Now Shipping

by
posted on September 14, 2015
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
sig1198_1_mcx_carbine.jpg

SIG Sauer's modular SIG MCX rifle, announced at the 2015 SHOT Show, is now shipping in 5.56 mm caliber, with chamberings in .300 Blackout and 7.62x39 mm to soon follow. Three variants of the rifle will be available to the commercial market: semi-automatic; short-barrel rifle (SBR); and pistol configurations. A full line of conversion kits and accessories will also be available soon. Additionally, in an effort to educate consumers about the MCX, the manufacturer has created a series of webisodes to introduce viewers to the experts and engineers behind the modular rifle, the requirements that guided its design, and the benefits and advantages of the platform.

“This is not an ‘AR’. This is the new standard in modern rifle systems,” said John Brasseur, Director of Product Management for SIG Sauer, Inc. “We’ve brought the minds behind the SIG MCX to the forefront to talk about the development, from the drawing board to production.”

The SIG MCX was designed for optimum short-barrel performance with the .300 Blackout cartridge and a silencer, which ultimately offers superior suppression capability and enhanced reliability with both supersonic and subsonic loads.

Sharing a modular design with the SIG MPX, the MCX is mission-adaptable, allowing barrels, handguards and stocks to be swapped in the field in a matter of minutes. Changing between 5.56 NATO and .300 Blackout is as simple as swapping barrels and operating rods. Conversion to 7.62x39 mm simply requires an additional bolt face change. Barrel lengths can also be changed, with 16" and 9" versions initially available. A two-position gas system makes the transition from subsonic to supersonic seamless. In combat situations, the MCX can run supersonic on the silenced setting without damaging the firearm or negatively impacting reliability.

Other features offered include a unique recoil assembly that does not require a buffer tube, allowing for side-folding stocks. A full-length Picatinny top rail allows for the mounting of lights or optics. Removable SIG Sauer iron sights are standard. The lower receiver offers familiar AR-style controls, with an ambidextrous selector and mag release as standard. The upper is compatible with Mil-Spec AR-15 lowers and, with the use of a SIG MCX Stock Kit, allows consumers to fully upgrade their legacy system.

The rifle variant will feature a 16" cold hammer-forged barrel, while the SBR will come with a 9" barrel. Both will offer a choice of four stocks: a low profile, side-folding skeletonized stock, a telescoping stock, a tubular side folding stock, or a folding telescopic stock. The pistol variant will feature a 9" barrel and a side-folding SBX Pistol Stabilizing Brace.

Fore more, please visit sigevolution.com or sigsauer.com

Latest

Google Ai Logo
Google Ai Logo

AI Summaries Reducing Firearm-Related Web Traffic, Sharing Incorrect Information

"[T]here are increasing concerns about how frequently AI systems invent false information—AKA hallucinations—with error rates in some tests reaching as high as 79 percent.”

Preview: Rite In The Rain 25 Meter M16A2/M4 Zeroing Targets

Precipitation and humidity can render a standard paper target unusable in only seconds, which is what makes Rite In The Rain’s line of weatherproof targets such a godsend for outdoor shooters.

Smith & Wesson Model 1854 Now Available In .30-30 Win.

Smith & Wesson expanded its Model 1854 series of lever-action rifles with several .30-30 Win.-chambered variants, just in time for deer season.

Preview: Making The Enfield Pattern 1853 Rifle-Musket

In Making The Enfield Pattern 1853 Rifle-Musket, author Peter Smithurst details the tools and processes used to produce this historically significant firearm.

Gun Of The Week: Charter Arms Double Dog

For this Gun Of The Week episode, we’re on the range with a convertible wheelgun from Charter Arms, and it’s one that goes from .357 Mag to 9 mm Luger quickly and easily. Welcome to the Double Dog.

The Armed Citizen® Oct. 17, 2025

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Interests



Get the best of American Rifleman delivered to your inbox.