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Available in .177, Pellet firing replica of the Sig Sauer MPX series tactical rifles.
Only $169.99
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  • CO2
    (1 Option)
  • PCP
    (1 Option)
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  • .177
  • .177
  • In Stock
  • Code: MPX-177-88G-30-BLK · $169.99 · .177 · 575 fps
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Train like the pros! The Sig Sauer MPX is a near exact copy of the firearm used by law enforcement and military units around the globe. With similar weight, feel, and controls these make a great way to bring the practice range home. These compact semi-auto rifles feature adjustable flip up sights, Picatinny top and side rails, and a 30 round magazine. Available in .177 caliber, these rifles are ready for action.
  • Caliber: .177 (Pellet Only)
  • Semi-auto
  • Metal Housing
  • 30 Round Magazine - Roto Belt Mag (Patented Design)
  • Integral Weaver/Picatinny Optics Rail and Accessory Rail
  • Flip-up Front and rear Sights
  • Adjustable Front Sight
  • Adjustable Rear Sight
  • Life Tested 15,000 Shots (Guaranteed)
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  • ManufacturerSIG Sauer
  • Caliber .177
  • Velocity 575 fps
  • Condition New
  • Ammo Type Pellets
  • Action Semiautomatic
  • Barrel Style Rifled
  • Fire Mode Repeater
  • Gun Weight 6.20
  • Overall Length 25.80
  • Barrel Length 8.00
  • Loudness 4-Medium-High
  • Magazine Capacity 0
  • Mechanism PCP & CO2
  • Rail Weaver/Picatinny
  • Safety Manual
  • Front Sights Flip-up, adjustable
  • Rear Sights Flip-up, adjustable
  • Shots per Fill 200
  • Trigger Adjustability 0
  • Trigger Action 0
  • Use Plinking/Fun
  • Warranty 1-year limited warranty
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Average Customer Review
4.521 Reviews
86% (18)
5% (1)
5% (1)
0% (0)
5% (1)
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By MichaelMay 9, 2023 Verified Purchase

Buy it

Realism, fair amount of power, excellent tool for training excellent toolfor recreation knocking cans and paper. Plus having the option to convert to a pcp .

Well , Id like to see a metal magazine, also like to see 60 round mag, also since we have co2 and a compressed air tank, how about a 88 or 90 gram nitrogen option.

By CraigUSAJanuary 5, 2023 Verified Purchase

Crazy, just like a Real MPX, No Jamming, Everything is on point

Cocking piece is lose

By ThatDudeMarch 30, 2021

Buy it now

Pros It’s a in house manufactured Sig

Cons Nothing

By daveUSAMarch 22, 2021

get one today!


i had 2, but after 6-9 moths the co2 begins to leak, now useless. does anyone know how to replace the seals???? email me, [email protected].

By Sig F.January 5, 2020

This is probably as close as you will get to a 9mm MPX without buying one. "Semi-automatic" in airguns generally means a heavy two stage trigger that first cocks the hammer and then releases it to fire a BB. In the case of the CO2 MPX the hammer is first cocked with the charging handle and then reset after each shot by CO2 blowback. The gun is belt fed with pellets from inside a credible 30 round removable magazine. Accuracy at 12.5 yds on HPA is just under 4 mils (80%) and the air consumption is reasonable with about three 30 round magazines worth of shooting before a refill is required and it's reasonably quiet. The magazine release and safety both work just as the AR patterned prototype. The picatinny rail on top is nice, two additional rails are bolted to the side of the handguard and can be moved around to suit your preference. There are adjustable (front and rear) sights that put the shots on target rather than just somewhere nearby. A tool is included to both adjust the sights and seat the pellets in the belt. It seems to prefer the lightest JSB pellets I can feed it. All in all this is a giant step forward for semi-auto airguns at a reasonable price. Sig should be justifiably proud of themselves on this one.

It's a Sig, it runs like a Sig, it does everything you would hope it could do just the way you would hope it could do it, just like a Sig. Amazing...

None, I really like this gun.

By David BUSAApril 22, 2019

The rifle is realistic in looks and in weight is very fun to shoot magazine is very easy to load it had a lot of fun with it in the backyard

By MichaelUSAJanuary 5, 2019

I am very pleased with this gun. I have one of each The mcx and the mpx I have purchased 15 clips so far and each clip comes with three belts I did a lot of research before I made up my mind. So far the belts work fine. Yes it takes time to load them but it's fun in a way when you have a lot of clips to load up.Almost twenty years ago there was a Russian system that they had for one of their guns ,but it was flawed. This time Sig got it right"

Guns and magazines worked flawlessly, It keeps one in practice at a much lower cost. Plus you can shoot it in your yard or basement.

It takes a little time to load up but one can get used to it Please note has the Key Mod system so in order to add lights etc. you must have the Key Mod bolts and adapters.

By CharlyDecember 19, 2018

A friend of mine bought one of these & an MCX years ago & I've wanted one ever since. It's extremely realistic in size, weight & feel & great for plinking & practice; A great alternative to live ammunition. In my opinion, the only downsides are the sarcastically small size of the magazine & amount of rounds (30) that can be loaded per magazine. If Sig were to upgrade to a 30 round AR-type or, even better, a single &/or double barrel clip option w/50-100+ rounds per loading cycle, this thing & the MCX would both be truly awesome!! I used to play around w/my buddy's MPX & MCX & quickly became infatuated w/them both, but was terribly partial to the size & comfortability of the smaller MPX. I haven't been lucky enough to go shooting w/him since he moved away to CO a few months ago & haven't been fortunate to have the extra cash to buy my own due to the fact I use every penny I earn to provide for my Wife & Son, as a Husband & Father should. Priorities. In summation, I absolutely love this impressive piece of art & it's surprisingly high level(s) of performance &, hopefully, I'll be able to buy my own a lot sooner than later & use it to educate my own Son on proper gun discipline & knowledge as my Father did for me! Thanky much!! - Charly Hayes

Lots... on so many levels!!!

Small plastic magazines which look fake & take a fairly decent amount of time to properly load; Upgraded larger metal or composite magazines of various (or even just one more) styles would be great additions & could prevent the break in fun which always occurs when having to stop & reload every 30 rounds. Or even if the amount of rounds per magazine could come closer to equalling the amount of shots available per 88-90-gram CO2 canisters, it would be a huge improvement. Otherwise, this airgun is amazing & my favorite regardless of any changes!!

By JoeyUSAOctober 23, 2018

I was very impressed at the construction of this airgun. The Co2 cartridges are quite expensive, but it is worth it for the accuracy and experience of the gun. If a manufacturer would make a refillable tank for this gun it would be something I would shoot hundreds of rounds a day with.

? Construction ? Accuracy ? Grip ? Trigger ? Size

Cost of cartridge

By Joe L.April 25, 2018

I purchased this airgun from a local gun store. I'd been drooling over it for a long time. As far as how it looks and feels it's a dead ringer for the firearm version. It's a little muzzle-heavy out of the box and, as others have remarked, the stock feels just a little loose. Once you have a CO2 bottle in it, it balences perfectly and the stock is rock-solid. From everythong I've been able to find on the web, this rifle isn't subbed out to an airgun manufacturer like nearly all of the 'official' airgun copies of real weapons, rather it's made in-house in the SIG factory. And it shows. I've shot and handled the real thing, and if somebody handed this thing to me and didn't tell me which it was, I probably wouldn't be able to guess until I actually fired the thing. I have no doubt that SIG would joyfully sell a million of these things to casual airgun shooters like me, but it's intended to serve as a training aid to the firearm version. So far as I know, this is one of exactly two airguns (with the Drozd) that are manufactured to genuine arsenal standards in a firearms factory, and lacks most of the cheap plastic shortcut parts that look authentic but are fragile as hell. As far as shooting, it goes off smoothly without a hitch. Due to its being an air rifle, the trigger is a bit kludgy. But if anything it shoots more accurately out to about ten yards than the firearm version.

All detailed in body of my review. Extremely high quality and authenticity. One of the very few super-authentic airguns that fires pellets, rather than BBs. Handles and operates more-or-less like the firearm version. Lots of shots out of the 90-gram CO2 bottle. This would have been a deal-breaker for me, if it got say only 50 shots out of the bottle because those things are expensive! Can also apparently handle an after-market refillable air bottle for even cheaper shooting, though doing so detracts from the cosmetic and handling authenticity of the rifle.

Would love to see a select-fire version of this. It would be a resounding smash in the market as there is currently only one full-auto pellet firing rifle in the market that I know of: the Air Ordinance SMG. This is a warning, not a con. If you're a foolish hothead or a drunk, or just an idiot who likes to impulsively brandish guns in inappropriate settings, be aware that even from two or three feet away this rifle looks exactly like the firearm version. If you wave it around or threaten someone with it, and they are armed or law enforcement officers.... Well, all I'll say is that I hope you have your life insurance paid up.

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Hi I see this is listed as plinking and target practice. Why isn't it also useable for hunting small game, is it not strong enough?

asked Habib from USA

Has anyone found a salution to the leaky seal problem? Please email me if you have.

asked Paul from USA

Can the sig sauer mpx be shiped to california?

asked Manny from USA

What all does this gun come with does it come with a refillable air tank that you can refill with a air compressor and is it good to use for small game animals basically for pest control?

asked Chris from USA

I believe there is an adapter to make it pcp with a 3000psi re fillable tank.

Michael from USA

Has anyone tried using THREADED (vs. non threaded cartridges) 16g, 25g, or even 45g CO2 cartridges with a simple 88/90g converter?

asked Carl from USA

Bought in June 2020, but from Amazon (this was before my first order from this site, which I now trust). Now, I can hear it leaking whether I hook up a disposable CO2 canister or the Air Venturi HPA Adapter. How can I fix this? Is there a warranty through Sig Sauer? Do I need to buy a new gun? Who do I contact? Not sure how this happened. I shot a clip the other day and had to pump the HPA Adapter back up. I started to hear the leak after I refilled it and put it back in. Any help would be greatly appreciated! Thank you!

asked Alexander from USA

Why does the title say " in .177, Pellet", and the description "Calibers: .177 & .22" and the photos show the receiver stamped ".22 CAL" yet there is no option (on any distributor sight) to select a .22 CAL version, only .177?

asked David from USA

It may be because they only have the .177 cal available and do not have any .22 cal in stock

Douglas from USA

Can I get this in 22 cal


How many fps?

asked k. brioux

Can you kill a mid size rat at 40 - 50 feet?

asked Andy

Do you have a parts breakdown and are parts available? Looking to replace some of the internal parts. Thanks Bob

asked Bob Miller

Why is this gun impossible to find for sale anywhere on the net including airgundepot? So many people want it, you see that in comments sections all over, yet they were once available. iraqveteran8888 has one. What's going on with this?

asked Adam from USA

what is the fps of sig sauer mpx?

asked Rick Hinson

How many rounds can I expect to fire with a 90gram co2? I'm trying to decide whether a real .22LR is cheaper to fire vs a .22 pellet and co2. .09 cents per round for a .22LR.

asked Joe

What is the FPS for this rifle ?

asked VICTOR from USA

has this item been released for sale yet?

asked douglas thomassen

What is the muzzle velocity

asked Cliff

What is the fps of this gun and is it good for hunting

asked Saul

What is the FPS on this rifle?

asked William from Canada

What scope do you add to this?

asked ASSimons

When is pcp version expected? How about selective fire version or modification? Does Sig actually manufacture these? Why so inexpensive? What materials are they constructed from, or percentage of plastic vs metal? Is there going to be larger magazine/belts avail for greater than 30 rds?

asked joe

Not an answer but another question. Looking for a quieter version with a pump refill capability. 50 to 100 round mags would be nice. Anybody know how big the new mags will be and if they will less loud than the current versions? As a pcp what form will the power source take...bottle attached? Or tube? HPA and CO2. Actually wish the SMG 22 made the bottle a tube, pump refillable and made that loud noise less loud. Of the 3 can live with the bottle as long as I can refill it with a pump.


Need to work on the loudness, magazine quality.


dates please.No dates were given as to when this question was asked or answered. I can only assume we are talking recently. A nice PCP version, quality built would be an awesome thing.


The PCP is not expected till late this year or early next year. There are no plans so far for a select fire version. Sig is the manufacturer, their airgun manufacturing is done in Japan. They are constructed from high impact polymer and metal, the chassis is polymer and the internals are metal along with the barrels. Larger magazines should be available at the time of initial release or shortly thereafter.

Scott from USA

Does this gun fire bbs or pellets?

asked jake from USA


Scott from USA
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