Airsoft SIG MPX

Balls Airsoft

Balls Airsoft

So the latest real steel firearm that everyone is getting all hot and bothered over is the SIG MPX.

Future airsoft Sig MPX

Future airsoft Sig MPX

Thanks to SIG FORUM for the pic.

This rifle on the outset looks like an illegitimate bastard child of an Mp5 and an M16. The compact features of an MP5 and the same operator controls of a M16. Same cocking handle, selector switch and mag release. This is a great advantage so you don’t need to relearn the all-important muscle memory between platforms. This can’t be overlooked especially for the Airsofter who switches up their equipment.

However the real steel non Airsoft SIG MPX is more of a little brother to the SIG MCX. Using the same gas piston system as its bigger 5.56 counterpart.

For those not completely familiar with the operation of a real rifle the gas system on a rifle works like this…
When a round is fired the gases that are expelling the bullet out the barrel at high velocity are redirected back into the rifle by the gas tube. The gas tube is located near the muzzle end or “business end” of the rifle.
The redirected gases from the barrel push the bolt back and cycles the system, loading the next round. This is how an M16 works.
Another popular system called a Piston system is similar however the redirected gas pushes on a piston which in turn pushes back on the bolt. This is how a SIG MCX works.

There are various advantages and disadvantages to both systems mostly reliability and weight. Using a piston system on a rifle that fires a cartridge smaller than 7.62 is considered overdoing it by some people. However some   people swear by the piston system and this rifle clearly caters to that crowd.

The gas only or gas and piston debate is like the PC / MAC debate in the computer world. Its simple one is better at different tasks than the other. It’s simple, if you’re doing word processing pick PC, if doing video, sound etc. use MAC. Can you use a MAC to do word processing? Sure you can, its overkill in price and performance. Can you use a PC to do video editing? Sure you can, it may be more cumbersome and slow but it will get the job done. Is a piston driven system over doing it for a SMG. Sure it is. Will it work, sure it will.

What does the Gas /Piston debate have to do with airsoft? Well nothing actually. This info is just for you gun tech geeks out there.

Now for the Airsoft side of things.

As of writing this the only airgun available is a Softair version sold by SIG as a low cost training simulator. Firing .177 or .22 pellets in semi auto only using a CO2 power source. The magazine is unique for an Air Rifle and holds 30 pellets using SIGs patented ROTO belt mag

Currently I couldn’t find any Airsoft manufacturers hinting on making a proper full auto 6mm version of this SMG. They are most likely in negotiations and/or waiting to see how well the real steel version sells.
The possibility of an Airsoft SIG MPX is high in my opinion, the real versions are selling well and there is a lot of interest. Currently the real version is high on my must check out list with a possible purchase. My only concern is the magazines. The 6mm Airsoft SIG MPX will also have the same magazine concerns.

The real SIG MPX is trying to become all calibers to all people. It is chambered in the classic 9mm and also .357Sig and .40S&W. The magazines have a slight bulb to the mag lips which may get caught / get stuck being removed from a mag pouch. I like my magazines sleek and sexy with no extra bulk. If you plan to buy an Airsoft version of the SIG MPX make sure your mag pouches are compatible with the magazines and allow for easy removal.
Airsoft sig mpx mags

Overall a SIG MPX 6mm Airsoft version would be a good buy for someone who currently has a
M4 / M16 and is looking to get an SMG. The controls are what you are familiar with and you don’t need to relearn the basics. The all important operator controls and dials like selector switch and mag release are what you have already used multiple time over. Overall I’m looking forward to the Airsoft MPX as a future addition to my armories.

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