✉ ✉ TFBTV Mailroom 28: The PEN-15 REVEALED! ✉ ✉
This guide details the assembly of the highly customized 'PEN-15' AR-15 variant, a community-sourced build featuring unique 3D-printed components and a 25-45 Sharps caliber. The process, guided by firearms journalist James Reeves and workshop expert Mark the Ruiner, highlights custom modifications and assembly techniques for an AR-15 platform. Viewers are encouraged to follow safety protocols during any firearm modification.












