MAGPUL MAG400-BLK MOE CARBINE STOCK BLACK SYNTHETIC FOR AR-15, M16, M4 MIL-SPEC TUBE (TUBE NOT INCLUDED)

The Magpul MOE Carbine Stock in black (MAG400-BLK) is a lightweight, drop-in replacement buttstock for AR-15, M16, and M4 carbines built on mil-spec receiver extension tubes, designed for sport shooters, builders, and home defense users who want a reliable, no-frills collapsible stock upgrade. Note that the mil-spec receiver extension tube is not included.

Key Features

• Part Number: MAG400-BLK
• Brand: Magpul (Magpul Original Equipment)
• Series: MOE Carbine Stock, Mil-Spec model
• Material: High-strength polymer, made in U.S.A.
• Color: Black
• Compatibility: Mil-spec sized carbine receiver extension tubes on AR-15, M16, M4, AR10, M110, and SR25 platforms (tube not included)
• Weight: 8.4 oz.
• Maximum length: 7.0 in.
• Maximum height: 5.2 in.
• Length of pull, collapsed: approximately 10.3 in.
• Length of pull, extended: approximately 13.6 in.
• Length of pull adjustment range: 3.3 in.
• Butt pad: Replaceable 0.30 in. rubber pad
• Sling attachments: 1.25 in. sling loops and lanyard hole
• Action: Collapsible, non-storage

Special Features

• The streamlined A-frame profile eliminates the sharp corners and protrusions found on standard mil-spec stocks, so the stock moves cleanly through gear and kit without snagging
• The shielded release latch sits recessed within the stock body, preventing accidental position changes during drills, transitions, or range handling
• The 0.30 in. replaceable rubber butt pad provides positive shoulder purchase even over body armor, plate carriers, or heavy winter clothing, and can be swapped out when worn
• Built-in 1.25 in. sling loops on both sides of the stock support direct attachment of standard slings without requiring additional adapters
• A rear lanyard hole accommodates paracord rigs for custom sling configurations or retention setups
• Compatible with Magpul ASAP and ASAP QD receiver-mount sling attachments, expanding your sling mounting options without modifying the lower

Practical Benefits

• The 3.3 in. length of pull adjustment range lets you fit the rifle properly whether you are shooting with a t-shirt at the range or layered up in the field
• The low-profile design works well alongside magnified optics and red dot setups because the cheek weld sits consistent across all six adjustment positions
• For builders piecing together a first AR-15 or refreshing an existing carbine, this stock drops onto any standard mil-spec tube from Colt, LMT, Ruger, S&W, SIG, and others without extra fitting
• Home defense users and competition shooters will find the fast, snag-free position changes useful when the rifle needs to move between users or positions quickly
• Your build gets a clean, purpose-built stock that adds no unnecessary bulk and holds up through high-round-count range sessions without loosening or rattling

The Magpul MOE Carbine Stock (MAG400-BLK) in black is a proven platform for any AR-15 or M4 carbine builder or shooter who wants a dependable mil-spec drop-in upgrade that performs consistently from the bench to the field.