Brand: FLUX Defense
Model: Raider 365 Ultralight SBR Stock Arm
Firearm Fit: FLUX Defense Raider 365 Ultralight polymer chassis
Butt Plate: Removable rubber buttpad
Style: Low-profile, flush-fit collapsing SBR stock arm upgrade
LOP Adjustment Range: Fixed extended length providing a 13.5-inch Length of Pull
Attachment Style: Proprietary dual-rail slot integration with a single swing-out pivot pin assembly
Material: Advanced glass-filled polymer composite
Finish: Matte Black
Length: Fits flush within the 9.75-inch collapsed footprint of the chassis / extends to 18.5 inches overall
Width: Open contour design nesting within a 1.25-inch total chassis width
Weight: Manufacturer does not list the standalone arm weight, but it contributes to the ultralight chassis' total bare weight of 8.7 oz
Includes: 1x SBR Stock Arm upgrade, 1x Removable rubber buttpad

Features

Convert your compatible chassis configuration with the FLUX Defense Raider 365 Ultralight SBR Stock Arm, designed specifically for the Raider 365 Ultralight platform. This replacement stock arm provides a rigid shoulder-contact point for users assembling a properly registered short-barreled rifle configuration. Built as a dedicated Raider 365 Ultralight component, the stock arm maintains the platform’s compact profile while offering a streamlined factory-fit upgrade. It is intended only for lawful SBR builds and should be installed after all applicable federal, state, and local requirements have been satisfied. FLUX lists this component separately from the Raider 365 Ultralight chassis.

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These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).