dogdik0311

not concerned w powder burn vs barrel length just a cqb upper w fixed irons that will RUN regardless of weather or not the supressor is mounted wanted to hear about/from others who had failed/suceded got my ap4 exactly the way i want it for a midrange carbine and it will run no matter what, no stoppages want the same out of an upper that is a short, manuverable and controlable as possible preferably w out spending 1800 w POF

thinking of doin a sbr conversion with a spare upper anyone tried their hand at this