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[ARCHIVED THREAD] - Piston question/ bug?

Posted: 9/24/2014 2:03:08 PM EDT

Why can't I design a piston build in .300 Blackout with the Adams arms parts?

The piston blocks and pistons can be used but the bolt carriers aren't available.

Posted: 9/28/2014 12:58:37 AM EDT

[#1]

This puzzles me as well. Curious to know what is up.

[ARCHIVED THREAD] - Piston question/ bug?

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[ARCHIVED THREAD] - Piston question/ bug?

[ARCHIVED THREAD] - Piston question/ bug?