Luth-AR .308 Mil-Spec Carbine Buffer Tube Assembly

Manufactured by Luth-AR
Manufactured by Luth-AR
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Looking to build the ultimate AR-10 carbine? This .308 Mil-Spec buffer tube assembly from Luth-AR comes with everything you need to attach a collapsible 6-position carbine stock to your AR. The Mil-Spec buffer tube is made from aluminum while the spring is made from stainless steel. When paired with a carbine length gas system, this buffer assembly will provide exceptional reliability and durability. It simply threads into any Mil-Spec AR-10 lower receiver and is compatible with the Luth-AR MBA-3/4 carbine buttstocks. The included latch plate and lock ring ensure that the buffer tube will not back off over time. The spring and buffer weight are tuned specifically to .308 and 7.62x51 caliber rounds and will not work with .223 rifles.

  • Carbine length aluminum extension tube
  • Standard .308 rifle stainless steel buffer spring
  • Standard .308 buffer weight
  • Latch plate
  • Lock ring

The Luth-AR company was founded by the same man who founded the DPMS and Panther Arms firearms companies. Randy Luth started as a machinist and built his way up to leading some of the most recognizable and respected companies in the firearms industry. The Luth company now owns seven patents for high quality AR-15/.308 components and accessories that are built for the competition shooter, hunter, and gun enthusiast.
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FitmentMIL-SPEC - 1.14 in
TypeBuffer Tube Kit
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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