spikes tactical upper non free float 16"
or
JSE surplus custom built upper with yhm free float diamond mil spec carrier
or
Delton custom built upper with yhm free float and RRA carrier
or
Any complete upper 550 and under
or
JSE surplus custom built upper with yhm free float diamond mil spec carrier
or
Delton custom built upper with yhm free float and RRA carrier
or
Any complete upper 550 and under