Is there any negatives to shaving down the A2 front sight to allow for a free float rail?

I just bought a BCM mid-length upper with a fixed A2 front sight. BCM did not have the upper with the hand guard I was looking for. I was going to remove the front sight and install a low profile gas block but a friend suggested I shave down the A2 front sight hence the question. I have the tools and Parkerizing solution to treat the finish once completed.

Any comments, suggestions welcomed.

Thanks- 5.56Geo