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SIG Sauer MCX Pellet Rifle, Flat Dark Earth

4.53 reviews
SIG Sauer MCX.

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1-year limited warranty



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SIG Sauer MCX Pellet Rifle, Flat Dark Earth (FDE)

  • Uses an 88- or 90-gram CO2 cartridge
  • Semiauto
  • Rifled steel barrel
  • 30rd Roto Belt pellet magazine
  • Adjustable flip-up front sight
  • Adjustable flip-up rear sight
  • Synthetic stock
  • Metal housing
  • Weaver/Picatinny optics rail
  • Removable tactical foregrip
  • Manual safety
  • Life-tested with 15,000 shots
  • Available to US customers exclusively

Riddle any soda can or target with 30 semi-auto shots from your Sig Sauer MCX.

Designed for dynamic shooting sessions, the SIG MCX is based on the short-stroke gas piston submachine gun of the same name. It’s excellent ergonomics, translate into a highly stable shooting platform loaded with a 5 different keymod accessory mounts and a long Weaver/Picatinny optics rail. This setup allows for an accessory layout as large as your imagination, with possibilities for any number of lasers, flashlights, dot-sights, and grips.

Each MCX includes adjustable flip-up sights and a shortened adjustable vertical grip, with sling mounts located on the forend and rear stock. To complete the look, the MCX has an elongated barrel surrounded by a shroud that looks like a long suppressor. To begin shooting, load up your 88 or 90-gram CO2 cartridge into the rear stock, and load your pellets into the innovative rotary-belt magazine and start blasting away.

The SIG Sauer MCX is sure to please fans of fast-paced tactical shooting and deliver hours of backyard shooting fun.

other products by SIG Sauer

Caliber0.177" (4.5mm)
Max Velocity700 fps
Barrel Length17.7"
Overall Length34.7"
Shot Capacity30
Front SightFlip-up, adjustable
Rear SightFlip-up, adjustable
Suggested forPlinking/Fun
Body TypeRifle
Fixed/adj. powerFixed
Weight7.25 lbs

other products by SIG Sauer

Average Customer Review

4.5 (3 reviews)
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4.0 4.0

4.0 4.0

3.0 3.0

By Dominick from USA on 2019-01-13
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Things I liked: Rapid fire, no glitching very consistent

Things I would have changed: Bigger diameter stock that allows air vs co2

What others should know: Good shooting up to 25 yrds


5.0 5.0

5.0 5.0

5.0 5.0

By Chris from USA on 2018-08-20
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4.01 rating

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Things I liked: Really over all great gun.its really realistic. I have to be careful where i live. Because it looks so real.feels like a real gun in your hands.

Things I would have changed: Its pretty accurate at 100ft its grouping about the size of a quarter. But ever 5 to 6 shots you get a stray thats about 2in out.could just be the pellets.


5.0 5.0

5.0 5.0

4.0 4.0

By Unknown Infidel from USA on 2018-06-09
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Things I liked: It has the weight and feel of an actual AR type platform. Feels good to my hands. Sights are fairly easy to adjust once I figured out how the strange looking tool that came with it works. It really is a 30 round rotary belt magazine. I carefully went over everything. Most of the AR parts are just for show and do not function but they do look like they would work. The hammer is fairly light and smooth so I won't complain about that. It's nice that it has a tool storage in the pistol grip. I was a bit worried I might lose that tool. The barrel shroud is metal and heavy so I'll need to get used to that. No real grumbles about it.

Things I would have changed: The rotary belt you put pellets in I found a bit confusing. I had to be very careful to keep it oriented properly so I didn't load the pellets in the wrong way which could be a problem. I got to remember silver front white back.

What others should know: Really nicely built gun. I have not been able to shoot it yet since 88 gram co2 is a hard thing to find where I live and I did not buy the pcp bottle kit.


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  • Douglas from USA asked:

    Can I shoot steel or copper or lead BBs in this MCX? I know steel will erode the rifling over time but what about the other choices? Will they work in the magazine belt? Can't find anything in the owners manual.

    • Jordan from USA:


  • Josh from USA asked:

    Has anyone tried 7.56g pellets in this rifle are they to heavy im just curious

    • Tyler from USA:

      7.5 grain pellets would work just fine

  • Gavun from USA asked:

    Do hollow points work in it?

    • Tyler from USA:

      As long as they are not super long, yes. I've used H&N crow magnums with no issues

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Item Description

SIG-AIR-MCX-177-FDE [PY-4595-8978]

MCX Air Rifle .177 Cal. 88/90 Gram CO2, 30 Rd. FDE

Caliber0.177" (4.5mm)
Max Velocity700 fps

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