Magpul PMAG 40 AR/M4 GEN M3 Magazine

Magpul PMAG 40 AR/M4 GEN M3 Magazine

£32.99
Skip to product information
Magpul PMAG 40 AR/M4 GEN M3 Magazine
Magpul IndustriesPart no. MAG233-BLK

Magpul PMAG 40 AR/M4 GEN M3 Magazine

£32.99
Key specs
40-round capacity to minimise additional reloads
Constant-curve internal geometry and self-lubricating anti-tilt follower provide smooth, consistent feeding
Next-generation polymer body resists crushing, impacts, and harsh field abuse
Bundle & saveDiscount applied automatically at checkout

Mix and match across the range: 2 items save 5%, 3 save 10%, 4 or more save 15% on your whole basket.

In stock · ready to order
£5 tracked UK deliveryOrder today — estimated delivery 7–10 business daysOrdered in from the manufacturer for you · Royal Mail Tracked 24 · tracking emailed on dispatchDelivery details
Fitment

Check the calibre and platform in the title before ordering; PMAGs are built for the specific rifle or pistol pattern named.

Not sure it fits your rifle? Ask us before you order

  • Genuine manufacturer stockOrdered in from the brand for your order — never grey imports or copies.
  • 30-day returnsChange your mind within 30 days of delivery, unused and boxed.
  • Secure checkoutEncrypted payment through Shopify and PayPal.
  • UK-based supportEmail us with your make and model — we reply within one working day.
Secure payment
  • PayPal
Product details

Everything you need to know.

Description

The PMAG 40 AR/M4 GEN M3 gives you 10 extra rounds more than the standard 30 without adding bulk or compromising performance. Built with the same crush-resistant polymer, constant-curve geometry, and anti-tilt follower as the rest of the GEN M3 family, the PMAG 40 delivers dependable feeding and rugged durability in any environment.

When you need more rounds and PMAG reliability.

When capacity matters and reliability can’t be questioned, the PMAG 40 delivers. Made in the USA.

Why shooters choose the PMAG 40 AR/M4 GEN M3 Magazine

  • 40-round capacity to minimise additional reloads
  • Constant-curve internal geometry and self-lubricating anti-tilt follower provide smooth, consistent feeding
  • Next-generation polymer body resists crushing, impacts, and harsh field abuse
  • Aggressive texturing for positive handling, paint-pen panels for quick ID, and removable floorplate for easy cleaning

What the PMAG 40 AR/M4 GEN M3 Magazine fits

Check the calibre and platform in the title before ordering; PMAGs are built for the specific rifle or pistol pattern named.

Specifications

Brand Magpul
Product PMAG 40 AR/M4 GEN M3 Magazine
Type Magazine
Platform AR-15
Colour Black
Material Polymer
Origin Made in USA
MPN MAG233

Genuine Magpul, ready to fit. Order the Magpul PMAG 40 AR/M4 GEN M3 Magazine today — ordered in from the manufacturer for you and sent by Royal Mail Tracked 24, with delivery in 7–10 business days.

Explore more: AR-15 Parts & Accessories or browse all Magpul.

Specifications
BrandMagpul
ProductPMAG 40 AR/M4 GEN M3 Magazine
TypeMagazine
PlatformAR-15
ColourBlack
MaterialPolymer
OriginMade in USA
MPNMAG233
CategoryMagazine
Barcode873750009698

In the box

  • Magpul PMAG 40 AR/M4 GEN M3 Magazine
Delivery & returns

Delivery

£5 tracked UK delivery on every order via Royal Mail Tracked 24. Our products are ordered in from the manufacturer rather than held in UK stock, so please allow 7 to 10 business days (Monday to Friday, excluding bank holidays) from the date of your order for it to reach you. Tracking details are emailed on dispatch. UK delivery only.

Returns

You have 30 days from receiving your order to cancel it for any reason, then 14 days to send it back unused and in its original packaging. Faulty, damaged or incorrect items are replaced or refunded and we cover reasonable return postage. Refunds go back to your original payment method within 14 days of receiving the return.

FAQ
Where is it made?

Magpul makes it in the USA.

What is it made from?

Polymer, according to Magpul.

Is this a genuine Magpul product?

Yes. It is ordered in from Magpul through our US supplier, not a copy or a clone.

How is it delivered?

It is ordered in from the manufacturer for you and sent by Royal Mail Tracked 24, with delivery in 7–10 business days and £5 tracked UK delivery.

How long does delivery take?

7 to 10 business days from the date of your order. Every order is sent Royal Mail Tracked for a flat £5 and you receive tracking details by email when it is dispatched.

Is this a genuine manufacturer product?

Yes. We list only genuine parts and optics from the brands shown, ordered in from the manufacturer for your order.

Will it fit my rifle, shotgun or pistol?

Compatibility notes on this page come from the manufacturer. If you are unsure, email us with your make and model before ordering and we will check rather than guess.

Do you offer multi-buy discounts?

Yes. Bundle & Save applies automatically in your basket: 5% off when you buy 2 items, 10% off at 3 items and 15% off at 4 or more. It works across the whole range, so you can mix and match, and there is no code to enter.

Can I return it if it is not right?

Yes — you have 30 days from delivery to cancel for any reason, as long as the item is unused and in its original packaging. See our returns policy for the details.

Why Onyx Armaments

Bought once. Bought right.

  • Genuine manufacturer stockOrdered in from the brand for your order — never grey imports or copies.
  • £5 tracked UK deliveryRoyal Mail Tracked 24, 7–10 business days, tracking emailed on dispatch.
  • 30-day returnsChange your mind within 30 days of delivery, unused and boxed.
  • Real answers, fastUnsure about fit? Email support@onyxarmaments.co.uk and we check with the maker.

Also consider.