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A&K M4 STW/PTW 120 Round Midcap Airsoft Magazine

ID: 55454 (Mag-A014)
5.0 stars, based on 4 reviews
A&K M4 STW/PTW 120 Round Midcap Airsoft Magazine
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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.

A&K M4 STW/PTW 120 Round Midcap Airsoft Magazine


  • For use with PTW, STW, CTW Airsoft training rifles
  • High tension spring ensures reliable feeding
  • Heavyweight design provides a more realistic feel than regular AEG magazines
  • Flat grey finish
Color: Flat grey
Compatibility: A&K STW, Systema PTW, Celcius CTW Airsoft training rifles and other compatible AEGs
Capacity: 120 rounds
Materials: Metal alloy, polymer

Manufacturer: A&K

Why Mid-Cap Magazines?
Mid-Capacity magazines offer stealth operation by eliminating BB rattle often experienced with Hi-Caps. They feed smoother than Hi-Caps due to their high tension internal spring, similar to a real steel magazine. Since 470 round Hi-Capacity magazines don't exist in real life, a good amount of Mil-Sim players prefer Mid-Cap magazines for an even more realistic type of gaming experience.

Due to the design of all Mid-Cap magazines, they actually function better once you break them in. To do so spray some light silicone oil into the magazine, load and unload it a few times until BB's feed smoothly. This process breaks in the internal spring allowing it to function without problems each and every time.

About A&K

A&K has been in business for more than a decade, boasting a huge selection of popular rifle models as well as unique platforms; Machine Guns, SMGs, DMRs, and even WWII replicas. A&K provides a great lineup of Airsoft products at a great value.

4 Customer Reviews

(Write a review)

by Daniel R. on 05/14/2017
"I bought 3 of these for my Systema PTW.
I actually like these much more than the Systema PTW magazines. The paint does come off fairly easy but I don't mind honestly.

Fair amount of weight, which feels pretty nice.
Works for Systema
Quality for low price

The only thing I can really think of:
Mags hold about 100 rounds, not 120.
To be fair, most mags claim to hold a lot more than capable to so this doesn't really matter to me either.
by Jameson M. on 04/28/2017
"Good product for the price!(especially on sale) however like is said in other review the followers will pop out if tour not careful. The metal for the shell is extremely dense and gives a good weight to the mag. These actually come in a gray color not black which was a good surprise. Personal preference. The only real issue I had was on the front side just under the feed lips there is a small screw, it protrudes just slightly more than my polymer PTS mags and if you run an actual systema or Celsius it will grab just a little cracking the setting for the screw. If your easy it won't happen but I'm kinda hard on my stuff. Overall though great for the price.
by Stephan H. on 02/05/2017
"Have only done a little bit of testing, but so far they seem to fit and feed .28s fine in my '07 SuperMax. Like with most airsoft stuff, your results may vary. Finish is more grey than black like the picture. But its a nice flat finish, so its it looks very comparable to mags that cost 2-3x more. Weight is also comparable, its a pretty hefty mag. Only complaint is that the bolt catch tab thing on the back of the mag is not smooth operating. Its getting stuck on the inside of the mag. I've got my PTW set up to have a constantly depressed bolt catch so it really doesnt matter to me. And it still works, theres just a weird stiffness/broken feeling to it when depressed.

In my opinion, its a very legitimate alternative to Systema and Celcius STANAGs.

Matte grey finish
Feeds .28s (havent tried .30s+ yet but i imagine it would be fine)

Weight (if you're used to aeg/polymer ptw mags)
Bolt lock tab (mine could be a lemon, so QC as a con)
Roll pins (personal preference. for maintenance purposes, I would rather have standard pins)

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