MAGPUL MAG401-BLK MOE CARBINE STOCK BLACK AR-15, M16, M4 COMMERCIAL TUBE

The Magpul MOE Carbine Stock in black (MAG401-BLK) is a lightweight, drop-in replacement buttstock for AR-15, M16, and M4 carbines built on commercial-spec receiver extension tubes, purpose-built for sport shooters, builders, and carbine owners running commercial-diameter buffer tube setups who want a clean, snag-free upgrade. Note that the commercial-spec receiver extension tube is not included.

Key Features

• Part Number: MAG401-BLK
• Brand: Magpul (Magpul Original Equipment)
• Series: MOE Carbine Stock, Commercial-Spec model
• Material: High-strength reinforced polymer, made in U.S.A.
• Color: Black
• Compatibility: Commercial-spec sized carbine receiver extension tubes on AR-15, M16, M4, AR10, M110, and SR25 platforms, including legacy models from Bushmaster, DPMS, and others (tube not included)
• Weight: 8.4 oz.
• Maximum length: 7.3 in.
• Maximum height: 5.2 in.
• Length of pull, collapsed: approximately 10.6 in.
• Length of pull, extended: approximately 14.4 in.
• Length of pull adjustment range: 3.8 in.
• Butt pad: Removable 0.30 in. rubber pad
• Sling attachments: 1.25 in. footman loops and lanyard hole
• Action: Collapsible, non-storage
• Lock spring: Premium chrome-silicon

Special Features

• The A-frame profile wraps around the release latch, shielding it from accidental engagement during rapid handling, transitions, or gear contact
• A premium chrome-silicon lock spring holds each of the six length of pull positions securely and resists the loosening and rattle common in standard mil-surp stocks over time
• The 3.8 in. length of pull adjustment range is wider than the mil-spec MAG400 variant, making this stock a strong fit for a broader range of shooter builds and layering conditions
• The removable 0.30 in. rubber butt pad grips the shoulder cleanly over body armor, plate carriers, or heavy clothing and pulls off for cleaning or replacement without tools
• Side mounting slots accept optional Magpul CTR Cheek Risers for non-AR15 platform applications, and the stock is compatible with Magpul ASAP and ASAP QD receiver-mount sling attachments
• The sloping cheek weld geometry keeps the profile slim while maintaining consistent head position across all adjustment settings

Practical Benefits

• If your lower was built around a commercial-spec tube from Bushmaster, DPMS, or other legacy manufacturers, this stock drops in without modification and immediately improves the feel and function of the entire platform
• The 3.8 in. pull adjustment range lets you share the rifle between shooters of different sizes or adapt it quickly between a range session in a t-shirt and a hunt in heavy layers
• The snag-free A-frame design moves cleanly through truck cabs, brush, and tight range bays without catching on gear or clothing
• Builders finishing a budget-conscious AR build get a clean, purpose-built stock that looks and performs well above its price point
• Your carbine gets a consistent, locked-in cheek weld at every position setting, so your eye line stays true to your optic whether you are running a red dot or a low-power variable

The Magpul MOE Carbine Stock (MAG401-BLK) in black is a solid fit for any AR-15 or legacy carbine builder who needs a dependable commercial-spec drop-in stock with a wide adjustment range and clean field handling.