Magpul Industries

Magpul MOE Carbine Stock Mil-Spec for AR-15/M4

Name: Magpul MOE Carbine Stock Mil-Spec for AR-15/M4
Brand: Magpul Industries
SKU: MAG400-BLK

£59.99

VAT included.

£5 Tracked Delivery · 7–10 Business Days

Estimated delivery: Tue 8 Sep – Fri 11 Sep

Stock is imported from the USA to us, then shipped to you from the UK — we cover all duties and import charges, so there is nothing to pay on delivery.

Colour: Black

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Product Overview

The Magpul MOE Carbine Stock is a mil-spec collapsible carbine stock for AR-15 and M4 rifles, fitting any Mil-Spec-diameter receiver extension.

The benchmark carbine stock — A-frame strength, clean ergonomics and among the best value-per-pound upgrades in the AR world.

The Magpul MOE Carbine Stock (MAG400) replaced millions of rattling, sharp-edged mil-issue stocks for good reason. Its A-frame profile adds structural rigidity while shielding the adjustment lever from accidental release, and the sloped cheek weld area gives a comfortable, consistent reference for your face — shot after shot. Multiple sling attachment options, including slots on both sides, rig cleanly for any carry style.

Built from Magpul's reinforced polymer, the MOE handles impacts, solvents and temperature swings without complaint. For a first build, a working truck gun or a fleet upgrade, few upgrades deliver this much genuine improvement per pound spent.

Why shooters choose the MOE Carbine Stock

Rigid A-frame profile — stronger structure, protected release lever
Comfortable, repeatable cheek weld — consistent sight picture
Multiple sling slots — ambidextrous rigging options
Reinforced polymer construction — proven on millions of rifles
Three finishes — Black, Flat Dark Earth, Olive Drab Green

What the MOE Carbine Stock fits

This is the Mil-Spec version, so it fits AR-15/M4 rifles running a Mil-Spec-diameter carbine receiver extension (buffer tube). Commercial-diameter tubes are slightly larger and the stock will not seat properly on them, so check your tube specification before ordering. Depress the lever, slide it on, done — the classic five-minute upgrade that transforms how a factory carbine feels.

Specifications

Platform	AR-15 / M4
Fits	Mil-Spec carbine receiver extension
Type	A-frame carbine stock
Material	Reinforced polymer
Finish	Black, Flat Dark Earth, Olive Drab Green
Brand	Magpul Industries
MPN	MAG400-BLK · MAG400-FDE · MAG400-ODG

The upgrade every AR deserves first. Order the MOE Carbine Stock today — in stock at Xtreme Tactical Gun Parts with £5 tracked UK delivery in 7–10 business days.

Explore more: Rifle & Shotgun Stocks, Precision Rifle Stocks, AR-15 Parts or browse all Magpul.

Compatibility & Fitment

Fits AR-15/M4 rifles with a Mil-Spec-diameter carbine receiver extension (buffer tube). Check your tube specification before ordering.

Please confirm platform, interface and fitment requirements before ordering.

Technical Specifications

Platform	AR-15 / M4
Fits	Mil-Spec carbine receiver extension
Type	A-frame carbine stock
Material	Reinforced polymer
Finish	Black, Flat Dark Earth, Olive Drab Green
Brand	Magpul Industries
MPN	MAG400-BLK · MAG400-FDE · MAG400-ODG
SKU / MPN	MAG400-BLK
UPC / Barcode	873750003108

Shop Related Categories

Shop AR-15 Parts & Accessories View category

Shop Magpul AR-15 Stocks View category

Shop Magpul Industries View category

Shop Rifle & Shotgun Stocks View category

Related Buying Guides

Not sure which option is right for your build? These guides break it down.

Buying Guide How to Choose an AR-15 Stock: Fit, Length of Pull & Platform

Buying Guide Best AR-15 Upgrades Under £100 (That Actually Make a Difference)

View all buying guides →

Product Questions

Which buffer tubes does the MOE carbine stock fit?

This is the Mil-Spec version, so it fits AR-15/M4 rifles running a Mil-Spec-diameter carbine receiver extension. Commercial-diameter tubes are slightly larger and the stock will not seat properly on them, so check your tube specification before ordering. If you are unsure which you have, measure the tube or get in touch with your rifle's make and model.

What does the MOE stock give me over a plain M4 stock?

The MOE (MAG400) is built around a rigid A-frame profile, which keeps the stock body stiff and reduces the wobble you often feel on basic collapsible stocks. It is a straightforward, no-frills design with no storage compartments or built-in QD sockets, which keeps it light and snag-free. For most shooters it is a simple upgrade in feel rather than a change in how the rifle is used.

How does it compare with the other MOE stocks in the range?

The plain MOE is the baseline: rigid, simple and light. Other MOE variants add features such as extra sling attachment options or different cheek and buttpad treatments, so if you want QD sockets or a rubber pad it is worth comparing across the family. Our guide to choosing an AR-15 stock walks through which features actually matter for different uses.

What colours are offered and what else do I need to fit it?

It is available in Black, Flat Dark Earth and Olive Drab Green so it can be matched to your grip and handguard. Fitting is a matter of removing the old stock and sliding this one on, so no extra hardware is normally required beyond your existing buffer tube and castle nut setup. You can browse the rest of the range in Magpul AR-15 stocks.

How will my stock arrive and what if it does not fit?

Stocks are dispatched from the United Kingdom with £5 tracked UK delivery in 7–10 business days, and you'll get tracking by email when it ships. If a part turns out to be the wrong fit, see our returns policy or contact us and we'll help sort it.