there is a new option for a front sight on the m14 that is a vast improvement over the navy sights. I call it the UFS or Ultimate front sight. What we do is fit and TIG weld a front sight dovetail directly to the gas assembly's forward ring. Your rifle ends up with a rock solid permanent platform for the standard m14 front sight to be installed to just as it does on the issue flash hider.
gas lock sights in general are prone to not aligning properly to index due to out of spec gas gas cylinders
gas locks sights also have a tendency to lose zero when gas plug is removed and reinstalled during cleaning processes.
they are great for a run and gun rifle where MOA accuracy is not important to the operator.
the UFS solves all these issues and my clients seem to be extremely impressed with them.
The UFS mod is 125.00 reg or 90.00 when booked with a shorty package and I must have your barrelled action , gas assembly and front sight for the modification