USGI 60mm Mortar Extension clips onto the M2 Mortar bipod sight mount and allows the 'mortarman' to use the M4 sight while he is laying down while the bullets are flying ! Genuine WW2/Korean & Vietnam mount extension clips on easily and has a dovetail sight mount for attaching the M4 sight.
Extension only. Very good condition although the finish may be worn a bit. Very limited.
