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This is a 3D printable lower receiver for Bear Creek Arsenal’s BC-9 Bufferless AR-9. It is a remix of the popular UBAR-9 lower receiver. The printed butt cap eliminates the need for the adapter piece included with the BC-9.
My original version of the NOBU incorporated the adapter piece and was not terribly robust as a result. After finally realizing the adapter was unnecessary, I redesigned it and ended up with this, which so far has been a solid performer.
My original version of the NOBU incorporated the adapter piece and was not terribly robust as a result. After finally realizing the adapter was unnecessary, I redesigned it and ended up with this, which so far has been a solid performer.