Forward Assist - Tear Drop , Large Round , Small Round
All 3 types of Forward Assists used by the US military.
-Large Round (Rare Transitional Model.. 1979- 1982) (Authentic NOS part)
- Small Round (Current M4, M16A2/A3/A4.. 1982-currently)
** Dates are not exact, easy rules of thumb.
Includes full Assembly with spring and pin.