FAB Defense GL-CORE S Compact CQB AR-15 Stock

FAB Defense GL-CORE S Compact CQB AR-15 Stock

The FAB Defense GL-CORE S is a compact collapsible stock designed for AR-15 and other compatible platforms using a carbine-style receiver extension. It is the shorter version of the GL-CORE stock family, built to reduce overall rear-stock length while retaining adjustable length of pull and a full shoulder contact surface.

The GL-CORE S is intended for compact rifle and carbine configurations where a shorter stock body is preferred. Its reduced dimensions make it better suited to CQB-oriented setups, shorter firearms, and users who want less rear overhang without moving to a minimalist stock design.

Key Features

• Compact collapsible stock for AR-15 and compatible platforms
• Shorter GL-CORE S profile for compact rifle and carbine configurations
• Adjustable length of pull
• Designed for carbine-style receiver extensions
• Interchangeable tube adapters for MIL-SPEC and commercial receiver extensions
• Ergonomic cheek-weld surfaces
• Rubberized buttpad for secure shoulder contact
• Inverted adjustment lever helps reduce accidental activation
• Integrated sling attachment points
• Reinforced polymer construction
• Available in multiple color options

Compact GL-CORE S Design

The GL-CORE S uses a shorter stock body than the standard GL-CORE, making it better suited to rifles where compact overall dimensions are a priority. The reduced rear profile can be useful on short-barreled rifles, compact carbines, and other close-quarters configurations where a full-length stock body may add unnecessary bulk.

Despite its shorter form, the stock retains the basic adjustability expected from a collapsible AR-style stock. The user can move the stock along the receiver extension to establish a preferred length of pull while keeping the stock body itself compact.

MIL-SPEC and Commercial Tube Compatibility

The GL-CORE S uses FAB Defense's interchangeable adapter system for compatibility with both MIL-SPEC and commercial-pattern carbine receiver extensions. This allows one stock body to be configured around either of the two common tube dimensions rather than requiring a separate model for each specification.

Buyers should verify the receiver-extension type installed on their firearm before setup and use the appropriate adapter for proper fit.

Ergonomic Rear Interface

The stock body is shaped to provide a consistent cheek-weld surface without adding unnecessary width. A rubberized buttpad helps maintain shoulder contact, while the compact profile keeps the rear of the rifle relatively streamlined.

The adjustment lever is positioned to help protect it from unintended activation during movement or handling. Integrated sling attachment points provide additional options for configuring the rifle around the user's preferred carry setup.

Product Specifications

• Manufacturer: FAB Defense
• Model: GL-CORE S
• Type: Compact Collapsible Stock
• Primary Platform: AR-15 and Compatible Platforms
• Receiver Extension Compatibility: MIL-SPEC and Commercial Carbine Tubes
• Length of Pull: Adjustable
• Buttpad: Rubberized
• Construction: Reinforced Polymer

Color Variants

• Black: FX-GLCORES
• OD Green: GLCORESG
• Flat Dark Earth: GLCOREST

Fitment Note: The GL-CORE S is intended for compatible carbine-style receiver extensions. Buyers should confirm their tube specification and firearm configuration before installation.

The FAB Defense GL-CORE S is best suited to users who want the adjustability of a conventional collapsible AR stock in a shorter package. Its compact stock body, dual receiver-extension compatibility, rubberized buttpad, and streamlined profile make it a practical choice for compact AR-15 and carbine builds where minimizing rear bulk is a priority.

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