just got back from the range with my vector 53 pistol. droppped my f/a trigger pack in and put on the vector collapsible stock and my [email protected] pistol gripped hand guard that i also use on my 51. after all of the vector horror stories about the gun and the mags, i brought alot of extra parts that i had recently ordered. ran flawless out of the box. went thru the new gun rountine-- fire a few and clean-fire a few and clean with a bore snake - then rock and roll . perfect firing, feeding and ejecting. vectors 40 round mags ; perfect. sight was off about 6 inches high and 6 inches to the right but that is it for the gun. i ran 3 different tyes of .223 thru the gun including 300 rounds of wolf and not a hiccup at all. i am having difficulty getting the mfi scope adapter to fit to mount a red dot as i do on all my hk , but i have had the same problem with my fleming mp5pdw and my rdts 51. i tried the vector with hirtenberger practice ammo which will run in my m16 but the plastic bullet didn't want to feed so i'll just run them in my 16. the great thing about the vector is that it didn't take me 2 1/2 years to get back from rdts as my 51 did and it has been already 1 1/2 years waiting on my suppressor fix and my hs precision barrel thread for the suppressor ! hope yours is as good as mine is --dave