 An indigenous programmable air-burst grenade launcher is currently under development for the FX-05, which will be able to fire standard NATO munitions in addition to Mexico's new RSE-7 fuel-air grenade round.The FX-05 is also compatible with the AG36 grenade launcher as used on the G36, which is in use until the proprietary design is finalized.In 2017, a Mexican-made UBGL was also demonstrated.