Side mounted technique using an built-in MILSTD 1913 rail piece for sighting devices. Suitable for use Using the M203. The main advantages of these modifications, nonetheless, have occur beneath scrutiny from the two the armed service and civilian firearms Neighborhood.[34] According to a PDF detailing the M4 Carbine improvement plans https://kac-drop-in-rail29517.look4blog.com/68410552/the-5-second-trick-for-ras-rail