SIG Redefines the Ranch Rifle With the new MCX-REGULATOR

You may think you’ve seen this rifle before. It bears an uncanny resemblance to the Fightlight SCR, but without its, well, unique buffer system. SIG SAUER says their new MCX-REGULATOR is a redefinition of the ranch rifle. Based on their MCX platform, this is a highly modular (it’s compatible with any MCX upper) gas piston gun with a built-in ARCA rail that SIG is offering in 5.56 and 7.62. It looks like it would make a hell of a truck gun.

From SIG . . .

Built on the legendary MCX platform, SIG SAUER is pleased to introduce the MCX-REGULATOR for an entirely new level of modularity.  This newest addition to the MCX family combines the upper receiver of the MCX SPEAR-LT and gas piston system used by Elite Special Forces worldwide with a newly designed lower receiver, trigger and stock, forever redefining the ranch rifle.

“The heart and soul of this rifle is one of our flagship products – the legendary MCX,” said Tom Taylor, Chief Marketing Officer and Executive Vice President, Commercial Sales, SIG SAUER, Inc. “This is the first time the DNA of an Elite Special Forces battle platform, flawless function, and a short stroke gas piston system has been specifically designed and visioned for the working rifle. At SIG, we don’t subscribe to the premise that it’s acceptable to compromise for any purpose, including your working rifle, and this rifle will revolutionize a day at the ranch or however you use your REGULATOR.” 

The MCX-REGULATOR is an aluminum frame rifle with a gas-piston operating system, a Magpul SGA Mossberg 500/590 traditional stock in a Gen II NiR FDE Cerakote for reduced IR Signature. The platform features a redesigned lower receiver compatible with all MCX upper receivers, a fully ambidextrous magazine release, safety selector, and bolt catch. The MCX-REGULATOR ships with a two-stage match trigger, a cold hammer-forged carbon steel barrel, a SIG designed muzzle brake, and is available in 7.62×39 and 5.56 calibers. The MCX-REGULATOR offers a built in Arca Rail for easy tripod mounting and ships with a 10-round magazine.

Additionally, the MCX-REGULATOR is available in with a factory installed mil-spec ROMEO2 optic. The optic features a molded glass aspheric lens with high-performance coatings for superior light transmittance and zero distortion, D.A.R.C. (Dark Adaptive Reticles and Coatings) technology to provide ideal reticle brightness and target clarity during the day or under night vision, MOTAC (motion-activated illumination system) automatically turns the optic off when not in use, and automatically turns it back on when it detects motion, and MAGNETAC (Magnetic Activation) automatically turns the optic off when holstered in a compatible holster, and on when drawn. The sight has a 7075-aluminum housing and comes with a full shroud installed to fully enclosed and seal the sight. A spring-loaded side battery tray with push-button release allows a battery change without the need to remove the optic from the firearm.  


Caliber: 5.56
Overall Length: 38.9 in.
Overall Height: 5.4 in.
Overall Width: 2.3 in.
Barrel Length: 16 in.
Barrel Twist: 1:7 in.
Weight w/magazine: 7.9 lbs.

MCX-REGULATOR (7.62×39):
Caliber: 7.62 x 39
Overall Length: 38.9 in.
Overall Height: 5.4 in.
Overall Width: 2.3 in.
Barrel Length: 16 in.
Barrel Twist: 1:9.5 in.
Weight w/magazine: 7.9 lbs.

Caliber: 5.56
Overall Length: 38.9 in.
Overall Height: 5.4 in.
Overall Width: 2.3 in
Barrel Length: 16 in.
Barrel Twist: 1:7 in.
Weight w/magazine: 8 lbs.

ROMEO2 Red Dot:
Magnification: 1x
Reticle: Circle Dot 3MOA
Adjustment: 1 MOA (per click)
Clear Aperture: 30mm
Illumination Settings: 12 Daylight, 3 NV
Waterproof: IPX7
Battery: CR2032
Overall Length: 1.84 inches
Overall Width: 1.32 inches
Overall Height w/o shrouds: 1.12 inch
NSN Number: 1240-01-717-4679

The base 5.56 rifle without the sight is priced at $2,699.99.


7 Responses

    1. Dimitar,

      Agree…I guess there are areas of the country where people still store firearms in theor trucks, but none of my rural friends, none of the farmers I know do so.

      As far as ranch rifles go, this Sig is too expensive to strap it onto the saddle and go galloping out to the range.

      1. LifeSavor (and Dimitar),

        Well, I slightly disagree about the practicality of a “truck gun”. “Back in the day”, at least where my Dad was from, most ranchers/farmers drove trucks, and damn near every truck had a “3 gun” rack in the rear window. Once the culture changed, and people had to start thinking about those guns (i) being stolen, or (ii) freaking out the GFWs, that changed, but the need for a gun didn’t. My uncle’s ranch, in north eastern Texas, had lots of wild pigs (who would tear down fences, dig up and wallow in pasture land, and destroy any garden you planted, if given the chance), coyotes (only the real kind, back then), prairie dogs, rattlesnakes, etc. The old set-up (which seemed to be “standard” in that part of Texas, was a .22 (mostly for snakes and prairie dogs), a shotgun (usually a cheap pump, often 20 ga.), for snakes, wild pigs, coyotes, and a lever action (either .30-30 or .357) for wild pigs or putting down cattle that had busted a leg in a prairie dog hole. Seemed to work, and it was ubiquitous.

        Since people don’t feel comfortable with the old “3 guns in the back window) set up, any more, but there is STILL a need for firearms for all those uses, the right “truck gun” can be useful. I found an old SKS that I was able to pick up for only $75 bucks. It shot fine (not the most accurate gun in the world, but good enough for those uses), and given its price and condition, I didn’t worry about having it in a duffle bag under the rear seat of my quad cab F-150. Worked fine on hogs and coyotes (as long as they weren’t too far away), certainly took care of a steer with a busted leg, and worked fine for snakes – not so good on prairie dogs, of course.

        I think the idea of putting a $2700 rifle in your truck, or even in a saddle scabbard, is retarded. That doesn’t mean there isn’t a need for a valid replacement for the old “3 gun” set up. But, yeah, only an idiot would drive around with a $2700 rifle bouncing around in his truck.

  1. Lamp,

    Yes. Back in Jackson, New Jersey, during my teenage years, it was rural…chicken farms, corn farms, horse farms. I saw pickup trucks with rifles mounted in the rear window. Not uncommon. But we were civilized back then.

    1. LifeSavor,

      Yes, we were more civilized – I didn’t look at your gun rack in your truck and think “Ooh! He’s got nicer guns than I do! I’m gonna steal them!”, nor did I freak out because someone else displayed a gun. If the person looked approachable, and it was a nice firearm, I MIGHT walk up and say, “Wow, COOL gun! How does it shoot? Do you like it?” Back then, the usual response was, “Yeah, it’s a pretty sweet set up! Here, let me unload it, so you can see how it feels!”

      And (with the exception of one year, where there was an “unexplained spike” – Lamp is guessing a little dispute over cooking meth) there hasn’t been a homicide in that town in over ten years. And, again, everyone in that area owns/carries guns. It ain’t the guns, it’s the people who use them improperly.

  2. Unless a big critter was close and charging; firing that rifle, with that brake, on that horse; could be real entertaining.

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