Abstract: A discrete fiber optic receptacle assembly (10) formed of an interlocking main section (30) and end panel section (20) within which one or more active optical devices (50) may be seated and enclosed. The active optical devices (50) are urged into alignment by insertion of the end panel section (20) into the interlocking main section (30), and pegs (22) become anchored in notches (38) to maintain the alignment by a secure resistance fit.