Brand: FLUX Defense.
Model: Raider X SBR Stock – Flush.
Firearm Fit: FLUX Defense Raider X and MP17 P320 Chassis Systems.
Butt Plate: Rigid, low-profile polymer buttstock surface intended for shouldering.
Style: Collapsible, flush-fit SBR (Short Barreled Rifle) replacement stock arm.
LOP Adjustment Range: Fixed extended length giving a standard 13.5-inch Length of Pull
Attachment Style: Proprietary dual-rail slot integration with a spring-loaded quick-deployment mechanism.
Material: High-strength advanced polymer composite.
Finish: Matte Black.
Length: Collapses completely flush with the 9.75-inch footprint of the chassis and extends to 18.5 inches overall.
Height: Compresses within the standard 4-inch to 6-inch chassis height clearance.
Width: Nests seamlessly into a 1.25-inch to 1.375-inch total overall width footprint.
Weight: 0.5 oz
Includes: 1x Flush SBR Stock Arm, 1x Standard iron sight windowed back cap

Features

Complete your registered SBR configuration with the FLUX Defense SBR Stock for the Raider X P320, designed to provide a rigid shoulder-contact point while maintaining a clean, streamlined profile. The flush-fit design integrates closely with the Raider X chassis, helping preserve the platform’s compact dimensions without unnecessary bulk. Built as a factory FLUX Defense component, this stock is ideal for properly registered Raider X short-barreled rifle builds, replacement projects, or conversions from a compatible brace configuration. Its durable construction and purpose-built fit make it a practical addition for range use, training, and compact P320-based chassis setups.

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