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SIG Sauer ProForce Spare Magazine for P320 M17 MHS GBB Pistol (Model: Green Gas / Black)

ID: 21534 (AMPF-M17BGG)
SIG SAUER798681640904AMPF-M17BGG21534
3.1 stars, based on 10 reviews
SIG Sauer ProForce Spare Magazine for P320 M17 MHS GBB Pistol (Model: Green Gas / Black)
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MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.


  • Metal alloy construction
  • Compatible with Green Gas
  • 21 round capacity
  • Authentic SIG trademarks with polymer baseplate

Manufacturer: SIG Sauer ProForce (UPC: 798681605095)


Compatibility: SIG Sauer Proforce P320 M17 MHS GBB Pistol
Magazine: 21+1 rounds
Gas Type: Green Gas


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.

'Modification of Green Gas and CO2 magazines to use aftermarket HPA fittings and valves will void all included warranties due to the potential risk of damage from exposure to High pressure and misuse.'

10 Customer Reviews

(Write a review)

by Adam A. on 04/12/2023
"I own 2 of these gun's and 8 mags all c02. In 4 years only one leak in a mag and 0 failures in the gun. I was so impressed by the power and performance I bought a second to replace my Elite force g17 I was having so much trouble with.
by wyatt l. on 07/10/2022
"Honestly, I had pretty bad luck with GBB Pistols, but against all odds, this magazine somehow worked the best for me. At first, I thought it was the gun that was faulty, but in reality, I have to take care of the magazines for this gun like a baby, or else something will fly off somewhere. To the problem of where the gun only shoots every other shot, all you have to do to the magazine is to purge some gas, and it works just fine. My only gripe for the magazines for this wonderful replica is the purging problem, but that’s really all… I can get off 2.5 magazines from one C02 Canister after purging gas from the magazine for ~1 Mississippi.

- Somewhat solid construction.
- Good consistency (In my opinion… Thankfully, CO2 is relatively cheap at my local Walmart.)
- Cheap base construction, definitely recommend wrapping the back of the magazine base in some sort of tape.
- Purging problem.
by Spencer J. on 03/30/2021
"Full disclosure I have only bought the green gas mags.
I really love this gun, but the mags have an issue where if the spring is pulled all the way down to load bbs and then released, the force of the spring on the plastic tip will snap it right off and send it flying about 30 ft. If the tip on the spring were just a little easier to keep hold of, it wouldn't really be a problem...

One thing I do really love about these Sig mags are - due to lack of experience with airsoft handguns, imp not sure if this is generally applicable to most handguns - interchangeable, and both the GG and CO2 mags will fit into the M17's mag well and function properly.

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