Which centurion c4 rail do you prefer.

[n4p226r]

14.5" Colt barrel. I'm deciding between three setups.

1. C4 carbine cutout. The one that wraps the sides of th sight

2. 12" FSP (this seems impossible to find used)

3. Grind down the front sight and get a 12"


I think I'm leaning #2 and throw an x300u-a on 12 o clock in front of the sight. But any thoughts or pictures would be nice.

This will probably stay iron sights only for a while.