Date: 19/3/2024 4:58

PY-3722-7150

SIG Sauer MCX CO2 Rifle + Scope, Flat Dark Earth

Main Product Rating 4.04.0 (13 reviews)
SIG Sauer MCX CO2 Rifle + Scope, Flat Dark Earth

SIG Sauer MCX, Image 1SIG Sauer MCX, Image 2SIG Sauer MCX, Image 3SIG Sauer MCX, Image 4SIG Sauer MCX, Image 5SIG Sauer MCX, Image 6
PY-3722-7150

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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
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.177 caliber velocities Our tech department provided this shot string, 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

Specs

Max Velocity600 fpsMeasured with 5 ammo
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

Average Customer Review

Rating 4.04.0 (13 reviews)
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Rating 5.05.0 5.0

Rating 5.05.0 5.0

Rating 5.05.0 5.0

Things I liked:

This is a really fun rifle to have and shoot.

Things I would have changed:

Better trigger.

Rating 4.04.0 4.0

Rating 5.05.0 5.0

Rating 4.04.0 4.0

Things I liked:

Excellent for practice drills. Nice weight and feel. The scope is quite decent and really adds to the cost value of the item. The 90 gm Air Venturi CO2 cylinders last through many mag reloads, but you have to have the patience to load 30 rounds without any kind of speed loader available for this style of belt-fed pellet mag. I am using this to practice for Appleseed rifleman qualification and ultimately high power competition, and am loading less than 30 rounds at a time. If you're doing mindless plinking and blowing through lots of rounds quickly, the mag capacity and 90 gm cylinders may not really do it for you.

Things I would have changed:

The trigger pull is quite long, but manageable. When you get used to it, it feels reproduceable and with careful trigger release it is capable of rapid fire shots. The trigger pull is better than many CO2 replica rifles like this, but could still be improved. The front hand grip is kind of lame, and I immediately removed it. It's too bad that the buttstock is not adjustable or interchangeable with other buttstocks, but that would be difficult to engineer due to the location of the CO2 cylinder.

What others should know:

The keymod-style handguard allows attachment of many keymod-compatible accessories such as front hand grips (substitute your own grip for the rather lame hand grip which is supplied), sling swivels, bipods, etc. I have put several mags through and am still on my first 90 gm cylinder, have had no misfires or misfeeds and like it more, the more I shoot it. I found that 5 gr lead-free pellets shoot higher and groups are not as tight as heavier match pellets. The heavier pellets stay within 3/8 inch at 10 yards, and the groups open up a bit with lighter pellets. This is not Olympic competition accuracy but good enough for the practice drills I am doing. Shooting results may vary with ambient temperature, as is true of any CO2 gun, and rapid fire can drop the temperature significantly. Cool temps will drop muzzle velocity, affecting reproducibility of shots and group size. I got rid of my Winchester MP4, because this is a much better performing replica CO2 rifle. I really like this gun.

Rating 4.04.0 4.0

Rating 4.04.0 4.0

Rating 4.04.0 4.0

Things I liked:

It's a lot of fun to shoot and I was surprised by it's accuracy. Around 15 to 20 yards this is a great rifle for shooting cans and plinking. Looks and feels like the real deal. The fun factor is high especially if you get the Air venture 13 cu-in tank and stock. It's around a 100 bucks but you never have to pay for air again, but you do have to have a compressor. I didn't have the opportunity to use it on this rifle, see below comments. I also have the MCX with the smaller barrel. It's basically the same rifle. Using the Air Venturi tank is much easier on the seals,because your not going to experience that severe temperature change like with CO2. You can also shoot a lot faster because regular air doesn't experience that severe temperature drop. I get about 300 shots with the tank and you can also detach the tank without loosing your air. Save it and shoot it later. I would definitely recommend this rifle. Sig makes a great product and they excellent customer service and tec

Things I would have changed:

Make the stock larger so that the Air Venturi 13 cu-in tank, and adaptor, can fit inside of it.

What others should know:

I purchased this rifle 18 months ago. I had shot about 1500 rounds and encountered no problems. Just recently though, the seals started to leak and I was only getting 3mags per CO2 cartridge. Prior to that I could shoot 7 mags per cartridge. I never put any oil on the CO2 cartridge as suggested by some buyers in the reviews. I talked with a Pyramyd Air tech and they suggested using some Pell oil on the CO2 to prevent this. They also stated that they don't perform any maintenance or work on Sig Sauer products. They did give me a contact number to Sig. I called Sig and explained the situation and they sent me an RMA number and paid for return shipping and stated that if they couldn't fix it they would replace it. That's was about a week ago and I will update this review when I get the rifle back

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  • George from USA asked:

    I lost my synthetic stock. Is there anywhere I can purchase a replacement synthetic stock? Thank you

    • Zakk from USA asked:

      Does the bolt catch on the side function?

      • Dmitry from USA asked:

        Hey guys. I just purchased mcx with the scope. Not from pyramid, i got an opportunity for an amazing offer. So i went ahead thinking that i don't have much to loose...expet for co2 price (i collect bb guns, mostly full metall replica pistols). I literally have over a 1000 12 gr cartridges....i thought that i was pretty much set for zombie apocalypse lol. Anyway, at 1st i thought to get an adopter from 88/90 gr to 12 gr. Then i thought that it wasn't practical (shooting about half a mag before changing co2....so i saw this cool set for 13 cu in tank. Does Anyone has any experience with that? I just got a few questions. 1st and most important - do i really need a tank with PSI regulator? 2nd- the buttstock---how comfortable is it. Im still deciding between it and coil remote where.i can carry a tank in a back pack....but then again- is it that safe. Im not trying to blow myself in half or get airborne lol. Please, if u have any suggestions, let me know. Thanks Pyramid and everyone else

        • Tyler Patner from USA answered:

          1) Yes. The gun is not made to handle higher pressures. 2) Buttstock is okay, but increases the length of pull to a point that may be uncomfortable for some shooters. Can always shoot without it. 3) A remote set up with the proper parts would be fine. Though you'd need to drill a hole for the hose to come through the buttstock.

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