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KWA MS120C Variable Capacity 30 / 120 Round Magazines for KWA ERG / AEG2.5 / AEG3 Rifles (Qty: 3 Pack)

ID: 90317 (MAG-KWA-197-04301)
3.5 stars, based on 4 reviews
KWA MS120C Variable Capacity 30 / 120 Round Magazines for KWA ERG / AEG2.5 / AEG3 Rifles (Qty: 3 Pack)
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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.
Qty Options:


  • Injection molded polymer construction
  • Raised textured shell provides a superior grip
  • Adjustable between 30 and 120 rounds
  • Mock window with mock bullets
  • Dot matrix for ease of marking and identification
  • Pack of 3
Compatibility: KWA ERG / AEG 2.5 / AEG 3 AEG rifles
Capacity: 30rds / 120rds, selectable
Materials: Injection molded polymer

Manufacturer: KWA

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 KWA

Established in 1988, KWA has been the leadingdesigner and manufacturer of airsoft replica weapons for law enforcement and military training. Its reputation for quality, performance, and reliability makes KWA a recognized leader in professional airsoft products.In a time when airsoft development is focused on external replications and logos, KWA has been advancing airsoft technologies with the introduction of the NS2 Gas Blowback System and the 2GX Mechbox. Both product advancements increase the overall performance and reliability beyond all conventional standards of the industry. These products represent KWAs commitment to excellence and passion for engineering products that simply outperform.KWAs state-of-the-art manufacturing facility is located in Taiwan with an independent sales and distribution operation in the United States that services the Americas and all European Regions.

4 Customer Reviews

(Write a review)

by Johnny N. on 07/21/2020
"I use these mags for the KWA Ronin T10 and they work great! Just make sure to change the switch from 30 to 120 before you start loading BBs and you're good to go.
by Susan D T. on 01/05/2021
"If you want to use these in a Ronin T6 you need to put a .8mm shim between the floorplate and the internals of the mag. If you don't you'll have to push up on the mag to get it to feed. I've talked to KWA about this and they say these are only compatible with guns that have last round cutoff. Once you shim them they work fine in AEG2.5s, but not well at all in my Arcturus AR03.
by Dominick U. on 02/06/2020
"Not sure if they just aren’t meant for the older Ronin series or not but I got one for my R6. While it did FIT it didn’t FEED unless I put some tape around the mag itself or pushed from the bottom into the gun. So as a warning for those who want to use these in (at least) the Ronin 6, it will not feed without modification of some sort

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