05-17-2017, 12:52 PM
It's too bad the "M4" contour is seeping into the Grendel world... that profile is made for a 14.5" and a grenade launcher. For a 16" I'd much prefer a mid length gas tube and a smooth profile without the random M4 cut. The M4 contour was made for those who want a non-NFA M4 look-alike.