This Handguard is made so that the shark cuts allow you to set a flash hider just on the inside without the possibility of destroying the sides. be sure that the ports still clear the shark cuts. perfectly sits up against the upper receiver to offer a beautiful monolithic look. A strong and secure locking system is achieved with 6 T27 screws, 2 each on the 3, 6, and 9 O’clock positions. Being a free float system allows for increased accuracy and performance.