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PY-3721-10260

SIG Sauer MCX CO2 Rifle + Scope

Main Product Rating 4.54.5 (6 reviews)
SIG Sauer MCX CO2 Rifle + Scope

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PY-3721-10260

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  • FeatureIcon
    WARNING WARNING This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

See other products by SIG Sauer

.177 caliber velocities Our tech department provided this shot string for the .177 caliber version, which was done with 5.25 grain match ballistic alloy pellets:

Shot 1: 428.11 fps Shot 2: 513.51 fps Shot 3: 493.59 fps Shot 4: 489.98 fps Shot 5: 499.75 fps Shot 6: 492.83 fps Shot 7: 497.49 fps Shot 8: 497.08 fps Shot 9: 474.27 fps High: 513.51 Low: 428.11 Average: 487.40 fps




  • SIG Sauer MCX Rifle
  • Uses an 88- or 90-gram CO2 cartridge
  • Semiauto
  • Rifled steel barrel
  • 30rd Roto Belt pellet magazine
  • Synthetic stock
  • Metal housing
  • Weaver/Picatinny optics rail
  • Removable tactical foregrip
  • Manual safety
  • Life-tested with 15,000 shots
  • Includes 1-4x24 scope with mil-dot reticle and fast-focus ring and mount
  • Available to US customers exclusively

See other products by SIG Sauer

SIG Sauer MCX Scope Combo Specs

Max Velocity700 fps
Overall Length34.7"
ButtplatePlastic
FunctionRepeater
ScopeableWeaver/Picatinny
SafetyManual
Suggested forPlinking/Fun
Caliber.177 (4.5mm)
Loudness4-Medium-High
Barrel Length17.7"
Shot Capacity30
BarrelRifled
ActionSemiautomatic
PowerplantCO2
Body TypeRifle

SIG Sauer MCX Scope Combo Reviews

Rating 4.54.5 (6 reviews)
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Rating 4.04.0 4.0

Rating 4.04.0 4.0

Rating 3.03.0 3.0

Things I liked:

What can I say but the looks and feel of this Carbine air rifle is great ,its mostly all metal with authentic weight and mechanics .it will shoot good groups at 25 to 30 yards but anything past that is going to be luck if you hit your target .The rifled barrel could be better but for the price its doing its job.Mine is a newer model so they have fixed certain issues like making more c02 tanks fit .I use to see people say the JT 90 gram tanks don't work well they all do on mine.Super fun gun to shoot I wish hit really hit 700fps but in reality with 5.5 gr (some of the lightest I have )I can hit 620fps and higher sometimes but not very often average in the MCX is around 550fps which is what the MPX short barrel version says it does.Bottomline superfun for plinking.As for pest control on a new tank your can get some smaller birds and pigeons if they are close enough and with the right pellet.Yesterday I hit a black sparrow type bird with my 5th shot on a new tank and it actually killed it

Things I would have changed:

make it blow back or at least make the side dust cover open so you can clear jams .Also this should be field strippable because you need to clean it for longevity and accuracy.Up the FPS and foot pounds to at least 1000fps even if it makes it a little more expensive and maybe offer a full auto select as well.

What others should know:

well after all this I need to mention that my first MCX broke after 3 and a half weeks I mean it just stopped firing out of knowhere .it was a brand new 90 gram tank (which are in short supply) wasted but since it was only 20 days they just swapped it out and gave me another one (I actually was gonna get a different airgun since they gave me credit back to spend on whatever I wanted but I got another one and so far so good and it shooting around 40fps faster . ITS ACTAULLY A GREAT STARTER AIRGUN IF YOU HAVE THE CASH AND LIKE REPLICAS .ONE THING IT DID DO WAS MAKE ME WANT TO BUY A MORE POWERFUL AIR RIFLE .MAYBE THE SIG VIRTUS IN .22 BUT PROBABLY NOT IF YOU WANT A PEST CONTROL/HUNTING AIR RIFLE SPEND THE EXTRA 3OO DOLLARS AND GET A MID RANGE PCP LIKE THE HATSAN BULLPUB OR BENJAMIN AKELA IN ,22CAL OR.25 CAL

Rating 4.04.0 4.0

Rating 4.04.0 4.0

Rating 4.04.0 4.0

Things I liked:

Nice size for garage short shooting. Plenty of fun with 30 rd clip. Decent scope as I am old. Getting 250 -300 shots per 88 cartridge.

Things I would have changed:

Would like to see 700 FPS as advertised.

Rating 4.04.0 4.0

Rating 4.04.0 4.0

Rating 5.05.0 5.0

Things I liked:

The realistic feel and weight. I got one with the scope and had it dialed in with 10 shots at 25 yards.

Things I would have changed:

Lose the forward assist gimmick, it's silly. Give me an adjustable buttstock.

What others should know:

The barrel is not rifled as SIG claims. I know because I have removed the barrel. ONLY use wadcutter pellets. Pointed varmint killers will jam in the mag. A ramrod will unjam the mag and allow you to remove it though. I had 4 co2 canisters leak after a month and was going to send it back for repairs until I pulled my head outta my ass and threw a dollop of vegetable oil on a new canister. Leak was fixed. I now always use Pellgun oil on all of my cartridges. BTW, toss the tiny foregrip handle. It's fun for backyard plinking but no way it will ever shoot @ 750 FPS. But it will break a beer bottle.

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  • Richard from USA asked:

    One of the customer reviews states that the MCX barrel is not rifled. The MPX, that I own, is rifled. Is the barrel of the MCX rifled?

    • Mark from USA answered:

      Yes, the MCX barrel is rifled.

  • Jonathan from USA asked:

    I'm having an issue cracking the CO2 tank after I screw it in. It's th 90gram Venturi cartridge. Help me out please?

    • Mark from USA answered:

      All repair work on The MCX will be done thru Sig Sauer 603-610-3000

  • Eric from USA asked:

    I know there's many shades of Black spray paint that are used for many reasons but, What shade of black is the color of the mpx?. My mpx when I bought it came all chipped & worn out. Specifically my flash hider, fire select and other metal parts. I want to re paint them carefully but, I don't know what specific shade or type of Black spray paint to use

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