This was removed from a new factory lower, includes buffer, spring, nut, and plate. Has small BM logo. Small section of the threads were galled slightly in one place from factory install (1 thread for about 3/4"), but the nut threads over it easily by hand and it can't be seen when installed. If I touched it up with AlumaBlack, I don't think you'd notice. Other than that perfect and unused. BM lists it for $106, this one is $70 shipped.