Date: 20/1/2019 17:17
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SIG Sauer MPX CO2 Rifle, Black

4.514 reviewsReview, article, latest buzz
SIG Sauer MPX.

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1-year limited warranty



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  • Description
  • Specifications
  • Customer reviews
  • Q & A: 16 answered questions
  • SIG Sauer MPX Rifle
  • 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
  • Manual safety
  • Life-tested with 15,000 shots
  • Available to US customers exclusively
Caliber0.177" (4.5mm)
Max Velocity575 fps
Barrel Length8.0"
Overall Length25.8"
Shot Capacity30
Front SightFlip-up, adjustable
Rear SightFlip-up, adjustable
Suggested forPlinking/Fun
Body TypeRifle
Fixed/adj. powerFixed

Average Customer Review

4.5 (14 reviews)
3 star2 star

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5.0 5.0

5.0 5.0

5.0 5.0

By Shenan from USA on 2018-10-15
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0.00 ratings

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Things I liked: Feels great well made should last for a long time. Great fun

Things I would have changed: Add more strips for loading


5.0 5.0

5.0 5.0

5.0 5.0

By Joe from USA on 2018-08-26
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Things I liked: This is my favorite gun to play with. I own a lot of other PCP guns with much higher power for hunting etc., and CO2 pistols, but for a grab and shoot gun that you can shoot pretty much anywhere you can't really beat this. Good basement and backyard plinker. Its realistic, feels great, can be used to practice different drills and is just an awesome gun. I put an illuminated holographic sight on mine and it just feels natural for target aquisition. The belt fed magazine on this has worked flawlessly for me, zero issues and very convenient. I absolutely love this gun. I haven't measured the dB but to my ear the gun is relatively quiet compared to other CO2 guns I own and I am more comfortable shooting this in my basement than my P226 or other pistols. The gun has worked with a wide variety of .177 pellets that I tried, everything from gold Gamo pellets, predator hunting pellets, armor piercing pellets, to Winchester high speed pellets and standard bulk hollow point .177 pellets.

Things I would have changed: The only thing I can think of to change would be to include a sling and some weapons lube. A higher powered version of this and the MCX in PCP and a higher caliber for hunting but still with the high capacity belt fed semi-auto magazine would be _the_ killer airgun. A .357 shooting with comparable ft lbs as the Benjamin bulldog, but in this exact form factor or the MCX form factor would be amazing.

What others should know: I thoroughly lubed the gun with weapons grease, lubed the magazines and belt with Ballistol and weapons grease, and haven't had any issues with jamming or any other problems. If you take care of it the way you would a firearm it should be reliable and accurate. Its just a really nice high quality weapon that comes in great packaging and is a great customer experience end to end, unboxing to shooting. Out of all the many guns I own the only others that gave me the same feeling of delight were the Seneca Light Hunter and the Umarex made in germany HK P30. Buy a bunch of extra magazines and stock up on CO2 cartridges. This way you can lube and fill a bunch of belts and mags and have fun shooting for a long time before you have to stop and refill the belts. when I just want to shoot without having to pump air or go anywhere this is the gun I find myself always grabbing.


5.0 5.0

5.0 5.0

5.0 5.0

By Hook from USA on 2018-06-09
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5.01 rating

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Things I liked: Everything about it. Good weight, great accuracy, easy to go through 300 pellets in one sitting. Indoor 20' accuracy, I don't even use targets anymore. Shoot at repair pasters and hit them 3-4 times before they blow through or fly off the backer board. Loading system is very effective, this thing is ridiculous fun. I use a red dot, but have the factory irons on 45 degree offsets, they are quite good themselves.

Things I would have changed: Not much. I wish you would get another seating tool when you order your spare mags, don't lose it! I'd have to nit pick pretty hard for anything else, maybe no screw hole through the faux ejection port door? As others have stated a sling qd attachment point in the stock would be cool, but I just use a soft strap with a d-ring and clip to that.

What others should know: AR grips -almost- fit, with some filing they could go on. I opted for a pierce grip adapter, turns an AR grip into a 1911. Love those things, have them on both my mcx and mpx. On Amazon you can get the gen 1 Sig rail sections that will fit this, in aluminum. They come with the real steel 5mm screws, you'll need 4mm, but they are nice to have. I also found a very nice 12g adapter on eBay from a british company called best fittings. 45-50 shots if you stay away from the mag dumps. They also sell some other parts for these. I got a .177 cleaning rod from Wal-Mart for about $7 because I heard these were prone to jams. Honestly, my mpx has never jammed, mcx maybe 3 times, all my fault. Short trigger pulls during rapid fire will occasionally jam these. I actually cleared the jams using a piece of copper wire to avoid scratching the bore. Others have mentioned trouble with various brands/sizes of co2. FWIW, I use the JT 90s with no problems, save the first one in the MPX. Hammer was stuck.


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  • Gerald from Canada asked:

    Can the extended barrel from the MCX be attached to the end of this airgun to give you the option to make the MPX into a MCX

    • Daniel from USA asked:

      greetings, what is the weight and what is the country of mfg?

      • Tyler from USA:

        Around 6 lbs. They are made in Japan

    • Chase from USA asked:

      Does this come with co2?

      • Tyler from USA:


    See all discussions

    Item Description

    SIG-A-MPX177B [PY-3716-7138]
    30rd Roto Belt mag, semiauto
    Caliber0.177" (4.5mm)
    Max Velocity575 fps

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