D Size Aluminum tube and cap set black

(1 customer review)

13/16×16 threaded end cap with a 1-7/16 x 20 external thread. These tubes have a standard 1-7/16×20 size thread compatible with any D size components.

(The end cap does not directly thread onto a firearm. You must have an adapter for the end cap to the barrel)

  • A solid end cap with an internal center mark and a 1-7/16 x 20 external thread.
  • A 7.30″ long tube with an outside diameter of 1.57″ and an ID of 1.35″. Nominal Specs.
  • End caps have a knurled edge.
  • Tube is constructed from 7075 Aluminum and end caps are 6061 Aluminum.
  • Anodized black.
  • Usable internal length is approximately 6.36″ (161.4 mm).
  • Total weight is 8.9oz


Out of stock


Our products are intended for the stated uses only. Our products are not designed, manufactured or sold for purposes of form 1 construction or any other application defined as “constructive intent”. We reserve the right to refuse service and we will do so to anyone who gives us reason to believe their purchase is for the purpose of “constructive intent”. By completing your purchase, you agree that the products purchased will only be used for the stated applications.


Additional information

Weight .66 lbs
Dimensions 8.2 × 1.6 × 1.6 in

1 review for D Size Aluminum tube and cap set black

  1. dellpepsi (verified owner)

    I placed a custom order utalizing this tube and end caps along with a muzzle brake adapter, titanium spacers and end cap for initial chamber and aluminum spacers and end caps for the remaining 9 chambers. My build has 10 chambers using 2 size 5, 8 size 3, 2 size 2, 10 1/4″ caps and 3 retainers wave springs, and it went together perfectly. Product came in 3 days! Great packaging, fast shipping, very high quality product! The spacers and end caps fit in the tube with no play what so ever. The ID of the tube and OD of the inserts are a precision fit! Jerry gave me great information and his communication was top notch! I will be returning to do more custom builds through this company!

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