The good is this is a great way to help you balance your gun for a decent price.
It looks good on most if not all guns.
works well and with the parts i have listed my internals weight is bout 1102 grains +- a few.
And much easer to grab than the stock (IMO)
well there realy is not much bad. It is a bolt pin and it does its job like it is spota.
If you have a extra few dollars around and want to get a lil shiney accent that helps preformace then get this.