Factory fitted is never the best .
Its a decent on but there are much better about .
Personally i think , mods , come into their own when u get custom ones made for " your barrel and set up "
Ive had all the top mods , HW , Twink , ect , and they dont come near a custom.
Nutshots are the dogs , and they , imo , will never be beaten simple because they are matched to suit your set up !
I have currently a Blodnob Shroud on my MFR and it will knock spots off anything you put against it , simply because it was made for my rig .
Simply , all " off the shelf" mods are go