For mounting on the carrying handle of an M16 Rifle. Secured by a bolt through a hole on the carrying handle (already on the actual M16 Rifle). Main body is hollow for use with rear sight aperture.
Material: Metal
Parts: Main Rail, lower attachment nut
Size: 140mm
Accessories included: 2x screws for dunno what
Notes: As you know, these are metal parts, proper oiling is required to protect it from rusting.