The M3.77 Falcon is a ground or air-launched ground attack missile developed by Ecija Defence Industries for the Philippine Air force It was originally intended for "fire-and-forget" use against mass formations of enemy armour, using a millimetre wave (mmW) active radar homing seeker to ensure accuracy even against moving targets.

Experience Aquired during the 5-month long Conflict in Marawi in the Philippines led to the addition of a laser guidance system in M3.77 missile, allowing a "spotter" to pick out specific and the highest priority targets, particularly useful to minimise collateral damage when friendly forces or civilians were in the area.

The the triangular shaped warhead is much more effective against modern tanks than older similar weapons such as the AGM-65G Maverick.

The missile was designed to meet the Philippine Airforce's requirement for a long range anti-armour weapon, allowing strike aircraft such as the Korea Aerospace Industries FA-50PH Fighting Eagle or The Embraer A-29B SuperTucano to attack tanks and armoured vehicles at stand-off range.