Barrel Extenders - 3.5 & 4.5 inch length

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Barrel Extenders to increase your barrel length as long as you need. Comes in 3 and 4 inches sections. (See actual dimensions below)

Modern M4 barrel diameter.

These are very high quality extenders with tight tolerances.. which means they can also be used for your Form 1 Suppressor design.

Can be permanently pinned, welded, or just screwed on tightly. Finish options are black or shiny unfinished steel.

Standard 5.56/.223 1/2 x 28 male/female threads on both ends.



- Overall length of 3.5 or 4.5 inch

- Diameter: .70

- Threads: 1/2 x 28

- Steel construction

- Available in Black or unfinished (shiny)

- 3.5" is 3.9 oz

-4.5" is 5.5 oz


* Note: Actual Extender length is different from overall length added to barrel. This is due to the overlapping threads, which means the actual length added to barrel will be a little more than 1/2 inch less than actual size.


** These Barrel Extenders can also be used as the basis for an integral Suppressor of your own design. Can be drilled / modified per your needs.