The Magpul CTR Carbine Stock (brand part number MAG310-GRY) is a Compact/Type Restricted buttstock built as a drop-in replacement for AR-15, M16, and M4 carbines running a mil-spec sized receiver extension tube. Made in the USA, Magpul shapes the CTR with a streamlined A-frame profile that resists snagging on gear and shields the release latch from accidental activation during hard use, backed by a supplemental friction lock system that minimizes excess stock movement on the tube for a tighter, more stable cheek weld. The ambidextrous QD sling mount accepts any push-button sling swivel, and the Mil-Spec Model includes a standard 0.30-inch thick rubber butt-pad for positive shoulder purchase even with body armor or modular gear in the way. This Stealth Gray finish suits modern gray and FDE-accented builds, and the stock ships without a receiver extension tube.

Key Specifications

• Made in the USA by Magpul.
• Fits mil-spec sized receiver extension tubes as a drop-in replacement.
• Uses a streamlined A-frame profile to resist snagging on gear.
• Shields the release latch from accidental activation.
• Includes a friction lock system to minimize excess stock movement.
• Includes a 0.30-inch thick rubber butt-pad for positive shoulder purchase.
• Features an ambidextrous QD sling mount for push-button sling swivels.
• Uses a collapsible stock style for adjustable length of pull.
• Finished in Stealth Gray for modern gray-toned builds.
• Ships with the receiver extension tube not included.

Frequently Asked Questions

Does this include the buffer tube? No, the CTR ships as the stock only; a mil-spec receiver extension tube is required and sold separately.

What does the friction lock system do? It minimizes excess stock movement on the tube for a more stable, consistent cheek weld.

Does it accept a sling? Yes, the ambidextrous QD mount accepts any push-button sling swivel.

Buy the Magpul CTR Carbine Stock, Mil-Spec – Stealth Gray

Upgrade to a proven, snag-resistant carbine stock built for hard use. Order it from our Magpul Industries lineup, part of our AR braces and stocks selection, at our Lubbock, Texas gun shop for fast, direct shipping.