[gobm667]

hey let me explain, i got a brand new ar 10 and figured i had to have a quad rail on it.. so my dumbass put it on there.. but when i did i moved the gas block.. then spent 40 rounds trying to adjust it so it would fire semi auto.. so i took it to a gun smith.. he adjusted it and said thats where it needed to be.. but he didnt test it.. its better but its still wont chamber the next round. it will eject the spent brass but it dont push the buffer spring back enuff to push another round in.. it will fire fine after i use the charging handle and put another round in there... so basicly i have a 1300$ single shot right now and im at wits end trying to figure this all out.. could it be that my ammo dont have enuff ass to push another round in there?? im using military surplus ammo? do i need to buy something with more ass? if so what? help me please???? i understand this is my fault and i would be very humbled for someone to help..
matt