Rainier Arms Milspec Buffer Tube Kit

Rainier Arms
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The buffer tube is made from 7075 aluminum with dry lube finish (100% milspec). Don't be fooled by other companies selling milspec tubes made from 6061. It might be milspec in size but it's not truly milspec. Buy from Rainier Arms and buy with confidence.


  • Mil Spec 6 Position Buffer Tube
  • End Plate
  • Castle Nut
  • Standard "H" Buffer 3.9oz
  • Carbine Buffer Spring for Collapsible Stock