Length of pull Extension Kits for FRS-15 Gen III

4310 Series
Availability: In stock

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As low as $31.99

OEM Length of Pull Extensions for FRS-15 GEN III Rifle Stock.

Our length of pull extensions are 1/2" thick each. With the 4" screws that came with your stock kit, a maximum of 7 spacers (including transition plate) can be used with the FRS-15 GEN III to achieve a 15" length of pull.


  • Four spacers


  • Stackable up to 7 spacers
  • Weight: 6.03 oz.
  • Injection molded polymer
  • Available in three colors


This product is intended for lawful purposes only. It is the responsibility of manufacturers, dealers, and end users to fully understand and adhere to Federal, State, and local laws when using this product. Thordsen Customs LLC and its industry partners will not be held liable for any unlawful configuration or other misuse of its products.

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