

- 140rnd Capacity
- High-density polymer build
- Compatible with M4/AR-15 AEGs
If you need to load up on cheap M4 mid-caps, the 140rnd TWS Mid-Cap Magazine for M4/AR-15 AEG from King Arms is a fine choice. Made from high-density polymer with a waffle-style textured exterior, this mag boasts TWS markings on the outside to add a professional look.
Like other mid-caps, this mag is loaded through the fill/feed port on the top of the magazine body, using a speed loader or loading tool. Compatibility-wise, this is designed for M4/AR-15 AEGs and should fit 99% of M4 AEGs on the market. If you're on a tight budget seeking maximum firepower, the King Arms 140rnd TWS Mid-Cap Magazine for M4/AR-15 AEG belongs in your rig!
Fast Delivery
Delivery & Postage
Here at Patrol Base, we send all our packages from our Warehouse based in the UK with the exception of European Warehouse Items. All of our parcels are sent with specially picked couriers to ensure your parcels get to you on time and in one piece.
For more information please check out our Delivery Information Page.
Estimates
Below are some rough postage prices for orders. Please note these are subject to change and are only a rough guide. For a more accurate postage estimate please use the Postage Calculator at the basket.
UK 3-5 day Standard
£6.95
From
Dispatched with 24hr UK mainland
£8.95
From
Highlands / Islands
£24.99*
From
* Please note that Scottish Highlands, and Islands postage prices can vary wildly. Please refer to the Postage Calculator at the basket for the lowest possible price.
Returns
We want you to be absolutely happy with our products and services, so we provide the simple Patrol Base guarantee: if on receiving your item you are unhappy with your item for any reason then simply send it back to us. We will replace or refund the item.
You can return any item for any reason whatsoever, even if you have just changed your mind, within 14 days of receipt of the order. This is in addition to your rights under the Consumer Protection (Distance Selling) Regulations 2000.
For more information on returning products, and how to do it please visit our Returns Policy Page.
Description
Features
- 140rnd Capacity
- High-density polymer build - Waffle pattern external design
- TWS Markings - Adds a professional look
- Loaded through the fill/feed port on the top - Use a speed loader or loading tool
- Compatible with M4/AR-15 AEGs
Package Includes
- King Arms 140rnd TWS Mid-Cap Magazine for M4/AR-15 AEG
Specification
General
Parts & Accessories Type | Magazine |
|---|---|
Item Colour | Black |
Construction | High density polymer with steel feed spring |
Weight (KG) | Approx.0.13KG |
Magazine Specific
Magazine Style | M4 / AR Platform |
|---|---|
Platform Type | Assault Rifle |
Platform | M4 / AR-15 / M16 |
Magazine Type |
|
Magazine BB Capacity | Approx. 140 Rounds |




