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Sig Sauer SIG SAUER Stock Adapter Low Profile Tube – 1913 Folding
This low-profile folding stock adapter assembly attaches to your MPX or MCX to allow for a traditional M4 stock to slide onto the low-profile buffer tube.
This unique design saves weight and reduces unnecessary bulk.
WARNING: Use of this product with, or attached to, a firearm may result in the firearm meeting the definition of a “rifle” or “short-barreled rifle” under Federal law. Many states and localities regulate the use and/or possession of collapsible and folding stocks. Use, or possession of this product in conjunction with certain other parts, may be illegal in some jurisdictions. It is YOUR responsibility to ensure that your use or attachment of this product to a firearm is done in accordance with all applicable Federal, state, and local laws and regulations.
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$20.11The KAC Keymod Flat Panel Kit includes a set of seven 5.5 polymer rail panels. Each textured panel snaps securely to any bare section of Keymod equipped rail, providing a more positive gripping surface and also insulating the support hand from barrel heat. These rail panels are very thin adding almost no width to the handguard. While designed for the URX 4 rail, these panels will also fit any other rifle handguard that has a Keymod interface.
Specifications:
Color: Black, FDE, Tan or Taupe
Panel Length: 5.5″
Material: Polymer
Quantity: 7
Model: P/N:31190-BLK, 31190-TAN, 31190-TAU
Manufactured by: Knight’s Armament Company
Note On Colors: Tan and Taupe are Knight’s Armament colors, Flat Dark Earth is a match to Magpul FDE -
KAC URX 4 IBN Keymod Rail 5.56mm 14.5″ Length
URX 4 The URX 4 is a continuous top-rail system that utilizes the Keymod mounting brackets developed by Vltor and Noveske. This rail system is built stronger and more stable than previous designs due to the absence of a removable bottom rail. The modular layout allows an end user to fully customize exactly where to place accessories without the use of specialized tools, small parts, or additional forces applied to the barrel. The URX 4 is currently available for 5.56 rifles in 8.5″, 10″, 10.75″, 13″, and 14.5″ lengths, and is equipped with Knight’s unique IBN mounting configuration. The idea was to create a more modular, and thus more serviceable, rail system that still maintains its strength and stiffness. Th IBN system torques the rail onto the weapon and allows the rail to act as the barrel nut.
This design was developed to increase stabilization and provide a simpler solution that requires less specialized tools to install and maintain. A full array of modular accessories, iron sights, and panel kits utilizing the Keymod mounting brackets have been developed specifically to accompany this rail system. With the introduction of the URX 4, Knight’s Armament Company demonstrates its continuing determination to intelligently design effective products. It is not suggested to use this rail with a 14.5″ or shorter barrel unless using a muzzle device such as the AAC flash hider which can be installed from the end with a tool.
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