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SIG Sauer ProForce P320 M18 MHS Airsoft GBB Pistol (Model: Tan / Green Gas / Competition Package)

ID: 24480 (AIR-PF-M18GG-RDPKG)
SIG SAUER85918824480124480
4.7 stars, based on 9 reviews
SIG Sauer ProForce P320 M18 MHS Airsoft GBB Pistol (Model: Tan / Green Gas / Competition Package)
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  • Metal slide with fully licensed SIG SAUER laser etched trademarks
  • Optic ready slide with removable reflex sight plate
  • Compatible with both CO2 and green gas magazines
  • Field strippable with similar weight and balance to the real M18 handgun
  • 1x23mm reflex sight with 3 MOA red dot allows for rapid acquisition of your sight picture allowing you to get on target faster
The Competition package comes bundled with a SIG Sauer Airsoft Red Dot Reflex Pistol Sight pre-installed. The reflex sight gives shooters a significant advantage over traditional iron sights by offering rapid sight acquisition and a more natural point of aim to get you on target faster.
This low profile 1x23mm reflex sight features a wide field of view and 3 MOA red dot. The manual brightness control, located on the front of the sight, has six illumination intensity settings making it easy to see the red dot in all lighting conditions. The sight features easy to use windage and elevation adjustments, and the lightweight aluminum housing and shock-proof design ensure durability.

Designed for professional training, this high-end SIG AIR ProForce airsoft pistol is a replica of the U.S. Army issued P320-M18 9mm pistol in look, balance, and handling characteristics and engineered to SIG standards for precision, accuracy, and reliability. The M18 is the compact variant of the MHS chassis.

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.

The ProForce M18 features a polymer frame and metal slide with full blow-back action. An adjustable hop-up feature creates spin on the BBs for additional stabilization in flight, resulting in increased distance and accuracy. A 20mm M1913 Picatinny accessory rail allows for quick and easy accessory mounting, comes with an optic cut for the addition of the soon-to-be-released SIG AIR Red Dot Optic, and is available in 12g CO2 cartridge or green gas power options.

Manufacturer: Sig Sauer / OEM: VFC (UPC: 798681626298)

FPS Range: 370-410

Color: Tan


Length: 195mm (7.7in)
Height: 140mm (5.5in)
Weight (w/ Magazine): 0.68kg (1.5lbs)
Barrel Length: 90mm (3.5in)
Magazine: 21+1 rounds
Gas Type: Green Gas
Firing Mode: Semi Automatic, Safety
System: Gas Blowback
Hopup: Yes, Adjustable
Package Includes: Gun, Magazine, Reflex Sight, and Manual


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.

9 Customer Reviews

(Write a review)

by Logan J. on 08/28/2021
"Finally got around to shoot this today after having it for almost a week, put about 150 rounds through it. I may be biased as this is my first gbb pistol and I own a real p320, but I love it so far. The ergonomics are perfect, the stippling feels great, almost everything is perfect. The grip (and gun in general) seem very chunky and wide in pictures, however having it in hand it it nice and thin in width and height, I've heard the grip is rather big but I have medium sized hands and very short fingers and its not uncomfortable to me. The performance is still kind of a mystery to me, I shot it out to about 60 ft and it was doing all right, however I was using .20g's and could tell the wind gust was part of the blame for any inaccuracy. The kick is very nice, its not too hard where it could become annoying in game but enough to justify it being a training piece. The trigger pull is *noicee* and responsive, I love it. Despite the common problem being the slide not locking back, this only happens to me less than 25% of the time, and there is a mod to prevent this, which should be done anyway so the slide release doesn't only hold on one side (if you own you definitely know what I mean) Now to a pro con list for all the people who don't want to read an idiot go on and on.

1:1 replica (no seriously its almost perfect)
sturdy construction, nothing rattles or wiggles
nice sound, has a pretty unique metallic click clack sound
sights, all i need to say. They're great
Nice blowback
comes soaked in oil, i removed it to oil myself but if you don't think that's necessary I don't blame you
crisp everything

CONS: (alot of this is to do with the mags... i really hate the mags)
questionable gas efficiency (I can get 30rds out of one load and 16 out of the same mag later)
poor quality feed lips, I have not experienced this but many others say if you let go of the spring you break them, just don't try it
no lock down, really wish I could lock it to the bottom when loading instead of holding it especially with the already mentioned issues
wobbly baseplate, this really annoys me, like alot
barrel assembly spring, there's a tiny spring at the bottom of the barrel assembly, this can pop off and cause the barrel assembly to be VERY loose, I believe this is how the other reviewers hop up assembly broke and flew out
safety, maybe its just my short thumbs but this is impossible to use in the firing position
hop-up, not sure if theres a better option for gbbps but its really annoying to fine tune

Thats about it, id definitely recommend it!
by chris k. on 07/24/2021
"Great gun. I bought the longer outer barrel and put in a 100mm inner tight bore. Add the red dot and you're done. I had to keep the stock bucking because everything I tried (Modify, Maple leaf) wouldn't let the hop up close properly. Get the M17 mags. They are listed as having the same capacity as the M18 mags but they actually hold 30+ bb's. The stock outer barrel does not accept a tracer even with an adaptor.
by chris k. on 07/20/2021
"I love this gun. Get the longer outer barrel and put in a 100mm inner barrel. All the buckings I tried wouldn't let the hopup close properly so you'll have to keep the stock bucking. Get the red dot too and you're done.

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