6 Position Extension Buffer Tube Mil Spec

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Product Description

  • Precise CNC Machining
  • Tight Tolerance Control With Zero Gap Fitment With Butt Stock And Receiver
  • T6 6061 Aircraft Aluminum Construction
  • Matte Black Anodizing with Type III Anodizing
  • Mil Spec Size Buffer Tube


AL-1055M guarantees precise fitment with your mil-spec butt stock. All aluminum T6 aircraft 6061 construction with level III hard anodized finish. Allows for installation of a butt stock assembly and threads onto the rear of your AR lower receiver.


All FSI accessories carry a 100% satisfaction guarantee against manufacturer’s defects in original materials and workmanship. If your FSI accessory shows evidence of such defects, FSI will fix, repair, or replace your accessory at the most cost effective manner possible. FSI does not warranty products or damage caused to our products as a result from improper installation or incorrect installation of other manufacturers’ products. Be sure to keep your sales ticket or receipt as proof of purchase date when making a claim.