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SIG SAUER ProForce MCX VIRTUS AEG (Model: 11.5" Barrel PDW)

SIG SAUER798681608270AIR-PF-MCXAEG93839
4.0 stars, based on 5 reviews
SIG SAUER ProForce MCX VIRTUS AEG (Model: 11.5 Barrel PDW)
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Optics, suppressor, Lantac magazine, and vertical grip shown in images not included
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Canada Export CompliantCanadaExport Compliant
This gun has a muzzle velocity rating (FPS) between 366 and 500, and is compliant for export to Canada.
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Free shipping within lower 48 US states, no coupon code needed!
Model Options:


  • Precision CNC machined all metal receiver w/ M-LOK handguard; fully licensed with deep engraved roll marks
  • Accurate weight and feel to the real thing
  • Barrel and handguard comes apart just like the real thing (allows easy access to battery compartment)
  • Ambidextrous charging handle w/ realistic dual return springs; mock bolt locks back for easy access to hopup adjustment (functional bolt stop)
  • Ambidextrous controls (selector, mag release)
  • 3 position telescoping PDW style stock
  • VFC Avalon Gearbox featuring improved bearings, quick change spring system, built in MOSFET, and powered by high torque neodymium magnet motors; Rifle comes with m120 spring pre-installed for outdoor use, m110 spring included to meet indoor field FPS limits
  • QD sling mounts on handguard, lower receiver, and stock
Since the early mid 1800s SIG Sauer has been widely regarded as a purveyor of some of the best small arms on the planet. Known for their fine combat, competition and personal defense pistols and rifles, SIG Sauer holds law enforcement and military contracts the world over and is the personal choice of thousands of firearm owners. People who trust their lives to a firearm put their trust in SIG Sauer.

SIG Sauer, a long time maker of real firearms and airguns has now taken their first step into Airsoft training weapons with their own in-house developed MCX VIRTUS AEG. Designed and engineered for professionals and discerning recreational shooters, the MCX is the latest offering from the rapidly growing SIG AIR division of SIG SAUER. The MCX VIRTUS does a wonderful job of replicating the look and feel of its real-life counterpart. One of its main features is the amount of modularity the rifle has to be easily configured for just about any kind of loadout to fulfill a multitude of roles.

The SIG AIR ProForce MCX Virtus is a very effective, safe training tool for professionals and avid target shooters that replicates the look and feel of its firearm counterpart, making it an ideal option for training in a myriad of environments where live fire is not possible, said Matt Handy, Director, SIG AIR. This is an exciting product for SIG AIR because, like the MCX, its completely modular and can be easily configured for multiple variations or loadouts based on purpose.

The SIG AIR ProForce MCX Virtus airsoft rifle is a battery-powered, automatic electric gun (AEG) that runs on a rechargeable battery. The airsoft rifle features an adjustable hop-up creating spin on the BBs for additional stabilization in flight, resulting in increased distance and accuracy. Equipped with interchangeable springs for velocity enhancement, the SIG AIR ProForce MCX Virtus has three fire control modes (safe, semi-automatic, and automatic). The included magazine holds 120 rounds of 6mm polymer or biodegradable BBs, with a velocity up to 400 fps and muzzle energy of 1 joule (using a .20-gram polymer BB.)

The VFC Avalon gearbox is an improved Tokyo Marui Spec Ver2 with low friction high quality steel bearings, built-in MOSFET, and quick change spring system; driving the gearbox is a high torque neodymium magnet motor.

Manufacturer: SIG SAUER (UPC: 798681608270)

FPS Range: 390-420

Color: Black


Length (Overall): 737mm (29")
Inner Barrel: 295mm
Weight: 3kg (7lbs)
Magazine Capacity: ~120rd
Thread Direction: 14mm Negative
Gearbox: VFC Avalon V2 Gearbox with ECS
Motor: Long Type
Fire Modes: Semi/Full-Auto, Safety
Battery: 11.1v LiPo Butterfly Type Recommended (Wired to handguard w/ small Tamiya)
Hopup: Yes, Adjustable (Rotary Style)
Package Includes: Gun, Magazine, Manual, m120 & m110 Springs

Parts Diagram can be found HERE


SIG SAUER, Inc. is a leading provider and manufacturer of firearms, electro-optics, ammunition, airguns, suppressors, and training. For over 150 years SIG SAUER, Inc. has evolved, and thrived, by blending American ingenuity, German engineering, and Swiss precision. Today, SIG SAUER is synonymous with industry-leading quality and innovation which has made it the brand of choice amongst the U.S. Military, the global defense community, law enforcement, competitive shooters, hunters, and responsible citizens. Additionally, SIG SAUER is the premier provider of elite firearms instruction and tactical training at the SIG SAUER Academy. Headquartered in Newington, New Hampshire, SIG SAUER has almost 2,000 employees across eight locations in the U.S. and around the world.


SIG SAUER air pistols, air rifles and accessories are engineered to elevate airguns to a new standard of performance. Perfected for practice with every advantage built in, these airguns are the economic, authentic answer to training more often, more effectively.

About ProForce

The SIG AIR ProForce line of airsoft guns is designed for professionals who train frequently and want the option of training safely in realistic force-on-force scenarios. SIG SAUER is a huge proponent of training, and we will continue to offer our customers numerous new product options to facilitate the safe practice of gun handling and target shooting in various environments.

5 Customer Reviews

(Write a review)

by Winston W. on 05/28/2020
"**This review is for those who have thoughts about getting this gun or have gotten this gun and dealing with the Area 51 grade adhesive on the orange muzzle break.**

So - after searching through Reddit and google, it seems people tried different methods or combinations of boiling water, acetone, heat gun, and hand torches. For me, I was able to get the tip off with a heat gun set to high/maximum (the model I used was able to generate over 1000F in heat) and pointing it directly where the threads would be on the muzzle break. I did this for a few minutes after giving the heat gun time to get hot enough. After a few minutes, the muzzle break was able to turn using a flat head screwdriver wedged into the muzzle break's spokes/teeth. Remember to twist in the opposite direction as this gun is 14mm negative thread (righty loosy, lefty tighty)! I've had to do this few times since the glue would cool pretty quick while I was twisting the muzzle break off but it did come off with little effort and much diligence!

It is possible to remove it and won't take a feat of strength and/or willpower as some of the reviews/reddit posts would suggest. I think they used Locktite - Red or something like it, which is kind of ridiculous but hey I guess they have to abide by national laws. Hope you guys enjoy the MCX, I look forward to using mine soon!

Just be careful with the heat gun and use the appropriate safety measures when trying this method. YouTube has a lot of videos on removing stubborn nut/bolt/threaded devices using heat guns/torches. Cheers!
by Matt R. on 01/05/2020
"So I just received this rifle a couple of days ago and have been able to field it for a whole day. I can officially say this is one of my favorite airsoft guns and you should absolutely buy it if you want something different than an M4.

Build Quality: Sig really went all out on the design of this rifle. It looks and feels just like a real MCX. The trades are all there, the metal and plastic parts are all durable and won't bend or break, and its just a very well put together rifle. The only thing that sucks about the design is where they decided to put the battery, which is this tiny space up in the handguard. The only battery that would fit for me was a triple cell nunchuck 11.1v

Shooting: This is the best out-of-the-box rifle I've ever seen. I could hit consistent targets at up to 200 ft with .28g bbs. The trigger is solid and the full auto with an 11.1v battery is stupid fast.

Ergonomics/feel of the rifle: This is a really important category for me when I decided on a rifle to buy, and this one is perfect for most situations. The three position stock is handy for CQB, and I usually keep it all the way folded in to keep it as compact as possible. The front handguard needs a grip or a handstop like I have on mine, and you will absolutely need m-lok covers, as the hand guard was CNC milled, so it is quite sharp. You have plenty of rail space on the top for whatever optics you like, and the rear grip is very comfortable.

Cons: one absolutely massive con on this rifle is the orange tip this gun comes with. Omfg it is a NIGHTMARE to get off. I had to take a diamond dremel blade and cut it off. Hopefully no one else has this problem, but this is just a PSA to anyone who gets this gun. Aside from that, the only other con I have is the battery placement, but with the correct battery you can stuff it up above the barrel and into the upper receiver to get it out of the way.

Overall, this gun is great for all situations, CQB or milsim. The build quality is second to none and the range and accuracy out of the box is top notch. As I said to my friend, it's the Bugatti of AR-platform rifles.
by Roy J. on 01/04/2020
"Pretty good so far. Basically a VFC Avalon with a different body.

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