pinarello6

New M4 user. Obtained M80 via Surefire's website direct. Do any M80 users know if any additional securing is required other than "prying" it on ? It feels very secure but based on the M4's recoil and gas ejection I would have felt better with some type of additional mouting hardware. As far as the unit itself, It appears highly functional although the lines where it meets barrel are not as clean and defined as the factory's