.308 Keyed buffer tube kit

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Our .308 Keyed Recoil System is ideal for use with either our FRS-15 Rifle Stock or AR/AK Cheek Rest kits. The center piece is our unique carbine buffer tube manufactured exclusively for Thordsen Customs. It is a carbine length hybrid design, combining the strength of Mil-Spec rolled threading with the heavier walls and length of a commercial buffer tube. They are made without the slot and detent holes. This gives it a clean look and eliminates the ability to lock an adjustable stock onto it.


  • .308 Carbine recoil system
  • Mil-spec Rolled Threading
  • Commercial profile tube
  • 8.6 oz. total weight
  • All American made parts


  • 1 - Keyed Carbine Length Buffer Tube
  • 1 - Weighted Buffer (4.0 oz)
  • 1 - .308 Carbine Buffer Spring
  • 1 - Castle Nut

Made in USA

It is the responsibility of firearms dealers and private firearms owners to know and fully understand all federal, state, and local firearms laws in their area. Thordsen Customs LLC will not be held liable for any misuse of its products and will assume that our product(s) comply with state and local laws unless otherwise notified by authorities.

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